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Hyo Seop Ahn  (Ahn HS) 91 Articles
Original Article
Other
Korean parents’ perceptions of the challenges and needs on school re-entry during or after childhood and adolescent cancer: a multi-institutional survey by Korean Society of Pediatric Hematology and Oncology
Jun Ah Lee, Jae Min Lee, Hyeon Jin Park, Meerim Park, Byung Kiu Park, Hee Young Ju, Ji Yoon Kim, Sang Kyu Park, Young Ho Lee, Ye Jee Shim, Heung Sik Kim, Kyung Duk Park, Yeon-Jung Lim, Hee Won Chueh, Ji Kyoung Park, Soon Ki Kim, Hyoung Soo Choi, Hyo Seop Ahn, Jeong Ok Hah, Hyoung Jin Kang, Hee Young Shin, Mee Jeong Lee
Clin Exp Pediatr. 2020;63(4):141-145.   Published online November 14, 2019
Question: What are the parental needs and challenges when their children return to school after cancer?
Finding: In addition to scholastic aptitude-oriented programs, emotional and psychosocial support is necessary for a successful return to school.
Meaning: Pediatric oncologists should actively engage in improving oncology practices to better integrate individualized school plans and educate peers and teachers to improve health literacy to make them understand the needs of children with cancer.
Case Report
Oncology
Targeted busulfan and fludarabine-based conditioning for bone marrow transplantation in chronic granulomatous disease
Hee Young Ju, Hyoung Jin Kang, Che Ry Hong, Ji Won Lee, Hyery Kim, Sang Hoon Song, Kyung-Sang Yu, In-Jin Jang, June Dong Park, Kyung Duk Park, Hee Young Shin, Joong-Gon Kim, Hyo Seop Ahn
Clin Exp Pediatr. 2016;59(Suppl 1):S57-S59.   Published online November 30, 2016

Chronic granulomatous disease (CGD) is a primary immunodeficiency disease caused by impaired phagocytic function. Hematopoietic stem cell transplantation (HSCT) is a definitive cure for CGD; however, the use of HSCT is limited because of associated problems, including transplantation-related mortality and engraftment failure. We report a case of a patient with CGD who underwent successful HSCT following a targeted busulfan and...

Hemophagocytic lymphohistiocytosis diagnosed by brain biopsy
Hee Young Ju, Che Ry Hong, Sung Jin Kim, Ji Won Lee, Hyery Kim, Hyoung Jin Kang, Kyung Duk Park, Hee Young Shin, Jong-Hee Chae, Ji Hoon Phi, Jung-Eun Cheon, Sung-Hye Park, Hyo Seop Ahn
Clin Exp Pediatr. 2015;58(9):358-361.   Published online September 21, 2015

Hemophagocytic lymphohistiocytosis (HLH) is characterized by fever, splenomegaly, jaundice, and pathologic findings of hemophagocytosis in bone marrow or other tissues such as the lymph nodes and liver. Pleocytosis, or the presence of elevated protein levels in cerebrospinal fluid, could be helpful in diagnosing HLH. However, the pathologic diagnosis of the brain is not included in the diagnostic criteria for this...

Review Article
Umbilical cord blood transplantation
Hong Hoe Koo, Hyo Seop Ahn
Clin Exp Pediatr. 2012;55(7):219-223.   Published online July 17, 2012

Since the first umbilical cord blood transplantation (CBT) in 1998, cord blood (CB) has now become one of the most commonly used sources of hematopoietic stem cells for transplantation. CBT has advantages of easy procurement, no risk to donor, low risk of transmitting infections, immediate availability and immune tolerance allowing successful transplantation despite human leukocyte antigen disparity. Several studies have...

Recent advance in primary immune deficiency disorders
Hyoung Jin Kan, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 2009;52(6):649-654.   Published online June 15, 2009
The immune system is comprised of cells and molecules whose collective and coordinated response to the introduction of foreign substance is referred to as the immune response. Defense against microbes is mediated by the early reaction (innate immunity) and the late response (adaptive immunity). Innate immunity consists of the epithelial barrier, phagocytes, complement and natural killer cells. Adaptive immunity, a...
Acute lymphoblastic leukemia in children: past, present and future
Hyoung Jin Kang, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 2007;50(7):601-605.   Published online July 15, 2007
The cure rate of acute lymphoblastic leukemia (ALL) in children dramatically improved over past 5 decades from zero to about 80%. The main cause of improvement is owing to the development of chemotherapy by multicenter clinical trial of large study groups with the understanding of leukemia biology. Recently, pediatric ALL protocols were applied to the treatment of adolescent and even...
Original Article
Etiological agents isolated from blood in children with hemato-oncologic diseases (2002-2005)
So-Hee Kim, Young-Ah Lee, Byung-Wook Eun, Nam-Hee Kim, Jin-A Lee, Hyoung Jin Kang, Eun-Hwa Choi, Hee Young Shin, Hoan-Jong Lee, Hyo Seop Ahn
Clin Exp Pediatr. 2007;50(1):56-64.   Published online January 15, 2007
Purpose : This study was performed to identify the etiologic agents and antimicrobial susceptibility patterns of organisms responsible for bloodstream infections in pediatric cancer patients for guidance in empiric antimicrobial therapy. Methods : One hundred and ninety-seven episodes of bloodstream infections that developed in 128 pediatric cancer patients were analyzed, which were identified at the Seoul National University Children's Hospital during...
Factors affecting the final adult height in survivors of childhood brain tumors
Kyong-Ah Yun, Young Ah Lee, Choong Ho Shin, Sei Won Yang, Hee Young Shin, Hyo Seop Ahn, Il Han Kim
Clin Exp Pediatr. 2007;50(1):65-73.   Published online January 15, 2007
Purpose : Short stature is an important complication that impairs the quality of life in survivors of childhood brain tumors. We studied their final adult height (FAH) to evaluate risk factors for short stature. Methods : We reviewed the medical data of 95 survivors of childhood brain tumors (64 males and 31 females) who had been followed up from 1982 to...
Endocrine dysfunction and growth in children with medulloblastoma
In Suk Yoon, Ji Young Seo, Choong Ho Shin, Il Han Kim, Hee Young Shin, Sei Won Yang, Hyo Seop Ahn
Clin Exp Pediatr. 2006;49(3):292-297.   Published online March 15, 2006
Purpose : In medulloblastoma, craniospinal radiation therapy combined with chemotherapy improves the prognosis of tumors but results in significant endocrine morbidities. We studied the endocrine morbidity, especially growth pattern changes. Methods : The medical records of 37 patients with medulloblastoma were reviewed retrospectively for evaluation of endocrine function and growth. We performed the growth hormone stimulation test in 16 patients whose...
Case Report
Development of Crohn disease in patients with myelodysplastic syndrome : report of two children
Jeong Ok Shim, Jeong Kee Seo, Hye Ran Yang, Jae Sung Ko, Hee Young Shin, Hyo Seop Ahn, Woo Sun Kim, Gyeong Hoon Kang
Clin Exp Pediatr. 2006;49(1):107-111.   Published online January 15, 2006
Crohn disease (CD) is rare, but the incidence of CD has been increasing over the past ten years. We found two cases of CD, associated with myelodysplastic syndrome (MDS), for the first time in children. In the first patient, MDS was diagnosed at three years of age and CD developed later at eight years of age. The patient presented with...
Original Article
Follow-up Study of Children with Anthracycline Cardiotoxicity
Hyok Joo Kwon, Young Hwan Song, Soo Jung Kang, Hyoung Jin Kang, Hyoung Soo Choi, Eun Jung Bae, Hee Young Shin, Chung Il Noh, Yong Soo Yun, Hyo Seop Ahn
Clin Exp Pediatr. 2003;46(3):242-249.   Published online March 15, 2003
Purpose : We studied the relationship between anthracycline cumulative dose and anthracycline cardiotoxicity in childhood cancer and followed up 40 children with anthracycline cardiotoxicity. Methods : A retrospective study was performed in 154 children who received anthracycline chemotherapy between January 1995 to December 2000. Cardiotoxicity was defined when the left ventricular fractional shortening(FS) was below 26%; it was divided into two...
Therapeutic Effect of Different Doses of Recombinant Human Granulocyte Colony-Stimulating Factor(rhG-CSF) on Neonatal Sepsis Complicated by Neutropenia
Moon Young Choi, Yeon Sook Jung, Dong Woo Son, Hyo Seop Ahn
Clin Exp Pediatr. 2002;45(4):439-448.   Published online April 15, 2002
Purpose : The aim of this study is to determine and compare the effects of adjunctive therapy with different doses of recombinant human granulocyte-colony stimulating factor(rhG-CSF) on reversing sepsis-associated neonatal neutropenia, and their survival rate in a group I/II-type trial. Methods : RhG-CSF was injected subcutaneously to 10 septic-neutropenic neonates with doses of 10 μg/kg from Oct. 1995 to Sep. 1996,...
Case Report
A Case of Hepatoblastoma with Precocious Puberty
Chang Won Choi, Hyun Jin Park, Ki Woong Sung, Eun Sun Yoo, Hee Young Shin, Sei Won Yang, Hyo Seop Ahn
Clin Exp Pediatr. 2000;43(2):288-293.   Published online February 15, 2000
Hepatoblastoma is the most common primary malignant liver tumor in childhood. Most cases are boys generally below three years of age. Hepatoblastoma are associated with various non-metastatic syndromes. Rarely, human chorionic gonadotropin may be produced by the tumor. Ectopic gonadotropin production from this source is a rare cause of precocious puberty in boys. Since a report by Behrendt in 1931,...
Original Article
Clinical Significance of CD7 Expression in Acute Myelocytic Leukemia
Gye Jin Yoon, Pill Sang Jang, Young Choi, Jun A Lee, Hyo Jung Han, Hyoung Soo Choi, Hee Young Shin, Joong Gon Kim, Hyo Seop Ahn
Clin Exp Pediatr. 1999;42(3):374-382.   Published online March 15, 1999
Purpose : It has been shown that a considerable number of acute myeloid leukemia(AML) patients had both myeloid and lymphoid antigens. CD7 is a lymphoid antigen, often expressed in AML cells. We investigated 40 AML patients to clarify the relationship between the cellular characteristics and clinical features. Methods : We reviewed 8 CD7 positive(CD7+) AML patients and 32 CD7 negative(CD7-)...
Immunomodulation Therapy in Aplastic Anemia : Relapse Rate, Complications and Long-term Survival During Follow-up for More than 1 Year
Jun Ah Lee, Hyoung Jin Kang, Hyo Jeong Han, Hyoung Soo Choi, Eun Sun Yoo, Hee Young Shin, Joong Gon Kim, Hyo Seop Ahn
Clin Exp Pediatr. 1998;41(6):775-784.   Published online June 15, 1998
Purpose : We evaluated the response to immunomodulation therapy, long-term survival and relapse rate of aplastic anemia during follow-up for more than 1 year. Methods : Twenty-eight children, with moderate to severe aplastic anemia were followed for more than one year and 7 children expired after therapy, were analyzed. Antilymphocyte globulin(ALG) or antithymocyte globulin(ATG) by itself was given to 27 patients, and cyclosporine A(CsA)...
Induction Chemotherapy with BH-AC, Idarubicin, and 6-Thioguanine in Childhood Acute Myelogenous Leukemia
Hyo Jeong Han, Hyoung Jin Kang, Jun Ah Lee, Hyoung Soo Choi, Hyeon Jin Park, Ki Woong Seong, Eun Sun Yoo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1998;41(2):209-215.   Published online February 15, 1998
Purpose : We have undertaken this study to evaluate the effects of induction chemotherapy involving BH-AC, idarubicin, and 6-thioguanine(6-TG). Methods : BH-AC 300mg/m2/day was administered intravenously over three hours for seven consecutive days. Idarubicin 12mg/m2/day was administered intravenously for three days. 6-TG 100 mg/m2/day was administered orally for seven days. Intrathecal ara-C was administered on the first day of treatment. Results...
Outcome after Treatment of Retinoblastoma
Hyoung Soo Choi, Ki Woong Seong, Jae Kyung Lee, Kyung Ha Yoo, Hee Young Shin, Young Suk Yu, Hyo Seop Ahn
Clin Exp Pediatr. 1997;40(4):519-530.   Published online April 15, 1997
Purpose : Current treatment in retinoblastoma aims to save life and preserve useful vision by using combined modality therapy. This study was performed to determine the outcome after treatment of retinoblastoma. Methods : Medical records of all cases of retinoblastoma seen at Seoul National University Children's Hospital from September 1986 to April 1995 were reviewed. During this period, the treatment method...
A Result of Treatment of Malignant Germ Cell Tumors in Childhood
Hyoung Jin Kang, Jun Ah Lee, Hyo Jeong Han, Hyoung Su Choi, Hyeon Jin Park, Ki Woong Sung, Eun Sun Yoo, Hee Young Shin, Hyo Seop Ahn, Kwi Won Park, Byung Keu Cho, Hwang Choi, Chul Woo Kim
Clin Exp Pediatr. 1997;40(12):1707-1718.   Published online December 15, 1997
Purpose : Germ cell tumors have variable clinical characteristics according to the age, sex, primary site, and pathologic diagnosis. To provide the therapeutic principle, the clinical characteristics, response to the treatment, and prognostic factors were analyzed. Methods : Medical records of 57 children who were diagnosed as malignant germ cell tumor in Seoul National University Children' s Hospital from January 1986 till June 1996 were...
Mucormycosis in Leukemic Children
Seung Ghon Nam, Eun Wha Choi, Jin Young Park, Jong Jae Kim, Hee Young Shin, Hoan Jong Lee, Hyo Seop Ahn
Clin Exp Pediatr. 1996;39(3):379-388.   Published online March 15, 1996
Purpose : Mucormycosis is an opportunistic fungal infection caused by one of the ubiquitous fungi of the order Mucorales, occurring almost exclusively in immunocompromised hosts such as patients with diabetes, leukemia and lymphoma. Recently the incidence of mucormycosis is rising associated with the increasing predisposing factors such as cytotoxic drugs and immunosuppressive agents. Though mucormycosis is frequently fatal, there has...
Infections in Children with Neoplastic Disease
Eun Hwa Choi, Jin Won Pyo, Jin Young Park, Kyung Bae Kwon, Bo Young Yun, Hee Young Shin, Hoan Jong Lee, Hyo Seop Ahn
Clin Exp Pediatr. 1995;38(3):366-377.   Published online March 15, 1995
Purpose : Infection is a major complication in patients with malignant disease. This study was performed to identify the causes and the etiologic agents of febrile infections and to characterize the clinical courses including the response to antimicrobial agents inpediatric cancer patients. Methods : This study reviewed 274 febrile episodes occurring in 163 children with neoplastic disease which were indentified prospectively...
Results of Chemotherapy of Hepatoblastoma and Hepatocellular Carcinoma in Children
Kyung Duk Park, Gi Woong Seong, Jae Kyung Lee, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1995;38(2):195-206.   Published online February 15, 1995
Purpose : Surgical excision has been the primary treatment for hepatoblastoma and hepatocellular carcinoma. However, at presentation, only one third of such tumors are surgically resectable. Without operation, the disease is fatal. Therefore, neoadjuvant chemotherapy has been introduced for conversion of the unresectable tumors into the resectable ones. We studied th e effects of chemotherapy for hepatic malignancy in children. Methods...
Primary Cutaneous Aspergillosis in Leukemic Children
Jin Young Park, Mee Ran Kim, Hee Young Shin, Hoan Jong Lee, Hyo Seop Ahn, Je Guen Chi
Clin Exp Pediatr. 1994;37(4):520-526.   Published online April 15, 1994
Primary cutaneous aspergillosis is rare. In this report we describe primary skin infection by Aspergillus in 9 children with leukemia. The skin lesion was characterized clinically by erythematous macule and papule associated with pain and itching, followed by a rapid progression to ulcer and central black eschars with raised erythematous border at the site of venipuncture, insertion of intravenous cannula,...
The Effect of Alfacalcidol in the Treatment of Idiopathic Myelofibrosis in Children
Soon Ki Kim, Jeong Hee Kim, Dae Hyun Lim, Jong Woon Choi, Byong Kwan Son, Hyo Seop Ahn
Clin Exp Pediatr. 1994;37(3):339-346.   Published online March 15, 1994
Idiopathic myelofibrosis (IMF), which is characterized by marrow fibrosis, leukoerythroblastic anemia, teardrop poikilocytosis and splenomegaly due to extramedullary hematopoiesis, has known to have no form of therapy. On the ground of the possibility of reversing collagen deposition in IMF using 1, 25-dihydroxycholecalciferol [1, 25(OH)2D3], we report here our observations of 5 patients (M:F = 1:4) with IMF before and after treatment...
Antilymphocyte Globulin Therapy for Aplastic Anemia in Children
Soo Jong Hong, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1994;37(11):1526-1539.   Published online November 15, 1994
Immunosuppressive therapy based on the use of antilymphocyte globulin (ALG) has become standard therapy for patients with aplastic anemia who are not eligible for bone marrow transplantation. In this study, T cell subsets before and after ALG therapy, hematologic responses, complications and prognostic factors were analysed. Eleven (42%) out of twenty-six patients treated with ALG showed response, but...
A Clinical Study of Childhood Soft Tissue Sarcoma
Hye Lim Jung, Hong Heo Koo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1993;36(9):1258-1270.   Published online September 15, 1993
Medicine, Seoul, Korea Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea To study the clinical characteristics and treatment results of childhood soft tissue sarcoma, the retrospective study was performed on 67 patients with soft tissue sarcoma, experienced at the Department of Pediatrics, Seoul National University Hospital from January, 1982 to July, 1990. The...
A Prospective Study of Totally Implanted Venous Access System in 19 Children with Cancer
Kyung Duk Park, Eun Sil Dong, Seong Hoon Ha, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn, Seong Eun Jun, Gui Won Park
Clin Exp Pediatr. 1993;36(5):687-692.   Published online May 15, 1993
A totally implanted venous access system was inserted in 19 children with cancer. The devices were utilized for the administration of antineoplastic drug, parenteral fluids, antibiotics, and blood products. Total duration of implantation was 4,046 days for 23 implanted system (range 7-445 days). Complications included cather infection (0.247/100 catheter day), occlusion (0.692/100 catheter days), and dislodgement of needle (0.643/100 catheter...
A Clinical Study of Myelodysplastic Syndrome in Children
Seong Hoon Hah, Hyo Seop Ahn
Clin Exp Pediatr. 1993;36(4):556-567.   Published online April 15, 1993
Myelodysplastic syndrome is a heterogeneous disease complex which is basically a clonal disorder and has characteristics of cytopenia of one or more cell series in peripheral blood and of dyspoiesis of precurosirs in bone marrow. Since the nature of this disease in childhooh is very different from that in adults, retrospective clinical study was performed with 17 confirmed patients who...
Case Report
Recurrent Rhinocerebral Mucormycosis - A Case Report
Ho Sung Kim, Jin Young Park, Bo Young Yun, Eun Sil Dong, Hee Young Shin, Hoan Jong Lee, Hyo Seop Ahn, Je Geun Chi, Myung Whun Sung
Clin Exp Pediatr. 1993;36(4):589-595.   Published online April 15, 1993
A case of recurrent rhinocerebral mucormycosis that has occurred during an induction chemotherapy for acute megakaryocytic leukemia in a 10 year-old boy is reported. He had suffered from high fever, proptosis, right eye ball pain and necrotic inflammation of hard palate during the chemotherapy of leukemia. CT scan of the paranasal sinus showed inflammatory change of right ethmoid and maxillary...
Original Article
Acute Megakaryoblastic Leukemia in Children
Hong Hoe Koo, Sang Kyu Park, Eun Sil Dong, Hye Jung Park, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1993;36(1):9-16.   Published online January 15, 1993
We analyzed the clinical and laboratory features of ten children with acute megakaryoblastic leukemia (M7) and compared the findings with those reported in the literature. The diagnosis was supported by ultrastructural examination of platelet peroxidase or immunophenotyping for glycoprotein Iib/IIIa. Of the ten children, five were girls and five were boys. The median age at diagnosis was 13 months. Two...
Case Report
A Case of WDHA(Watery Diarrhea Hypokalemia Achiorhydria) Syndrome
Nam Seon Beck, Jun Jai Kim, Beom Soo Park, Jeong Kee Seo, Hyo Seop Ahn, Hyung Ro Moon, Je Geun Chi
Clin Exp Pediatr. 1992;35(4):575-580.   Published online April 15, 1992
VIP secreting tumors are rare in children but they produce a dramatic clinical picture, the most prominent feature of which is profuse, watery diarrhea and hypokalemia. A 5-year-old girl was brought to Seoul National University Children's Hospital for evaluation of profuse watery diarrhea. She presented with watery diarrhea, hypokalemia, and stunted growth, and had experienced these problems for four years...
Three Cases of Brain Tumors with Bone Metastasis
Eun Joo Kim, Kyung Duk Park, Eun Sil Dong, Hye Jung Park, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn, Je Geun Chi
Clin Exp Pediatr. 1992;35(3):381-389.   Published online March 15, 1992
Medulloblastoma and primitive neuroectodermal tumor(PNET) are relatively common intracranial neoplasms in childhood. Their extracranial metastasis were thought to be rare occurrences. But they are more frequent compared to other intracranial tumors. The most frequent site of metastasis deposits in medulloblastoma is bone, and metastasis to lymph node, peritoneum, liver or lung have been reported infrequently. The authors experienced three cases...
Original Article
Carcinomas in Childhood -A 10-Year Experience in Seoul National University Hospital-
Hong Hoe Koo, Kyung Duk Park, Hye Lim Jung, Sang Kyu Park, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1992;35(10):1369-1376.   Published online October 15, 1992
Carcinomas in childhood differ from those in adults in their frequency, histologic type, and distribution of primary sites. In children, carcinomas are rare and few series have been published containing sufficient mumbers of cases to permit a reliable account of the incidence and survival of children with carcinoma. During a 10-year period, 1982-1991, we observed 40 patients less than 16...
Incidence Estimation of Leukemia among Korean Children
Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn, Yoon-Ok Ahn
Clin Exp Pediatr. 1992;35(1):80-87.   Published online January 15, 1992
Leukemia is a neoplasm arising from the malignant transformation of hematopoietic cells. The incidence data of leukemia have not been available for Korean as a whole. The present study was therefore undertaken in order to estimate the incidence of childhood leukemia among Korean. The study population of this investigation was the beneficiaries of the Korea Medical Insurance Corporation(KMIC) during the period...
Clinical Considerations of the Mediastinal Tumors in Children
Eun Joo Kim, Hye Lim Jung, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1992;35(1):98-107.   Published online January 15, 1992
Mediastinal tumors of children constitute a heterogeneous group of malignant and benign neoplasms because they originated from a variety of structures. But they show some characteristics in type of tumor according to location, relative frequency of masses, clinical manifestations. Management and long-term reusult. We observed 82 patients less than 16 years of age who were evaluated and treated for a...
Immune response induced by live attenuated varicella vaccine(Biken@) in children with acute lymphoblastic leukemia.
Hyo Seop Ahn, Joong Gon Kim
Clin Exp Pediatr. 1991;34(9):1255-1260.   Published online September 30, 1991
To determine the safety and efficacy of varicella vaccine, we studied 10 healthy children and 12 children in remission from acute lymphoblastic leukemia. They were immunized with the Oka strain of live attenuated varicella vaccine (Biken®). All the healthy children and 6 children with leukemia received the vaccine of 1,000 plaque-forming units (PFU), and 6 leukemic children received the vaccine of 500 PFU. The...
A case of bone marrow necrosis in acute lymphoblastic leukemia.
Mee Ran Kim, Hye Lim Jung, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(8):1163-1168.   Published online August 31, 1991
Bone marrow necrosis is a rare complication most commonly encountered in patients with leuke- mia, metastatic tumor in marrow, sickle cell disease, DIC and severe infections. Recently it is regarded as a more common finding frequently overlooked and carrying not so poor prognosis. We reported here a boy with ALL who showed marrow necrosis on biopsy at the time of diagnosis and achieved complete...
A case of pancytopenia associated with mycoplasmal pneumonia.
Young Mee Yoo, Beom Soo Park, In Sang Jeon, Hee Young Shin, Hyo Seop Ahn, Se Jung Sohn
Clin Exp Pediatr. 1991;34(6):826-831.   Published online June 30, 1991
Mycoplasma pneumoniae infection is manifestated as pneumonia and extra-pulmonary symptoms such as hematologic, neurologic, gastrointestinal, musculoskeletal, dermatologic and cardiac manifes- tations. Among the hematologic changes, hemolytic anemia is most frequently seen. Throm- bocytopenic purpura, lymphocytosis or rarely lymphopenia, elevated erythrocyte sedimentation rate, positive direct Coombs test, reticulocytosis and DIC are known hematologic features. This 12 years old female patient was presented with pneumonia and pancytopenia....
A case of acute lymphoblastic leukemia complicating neuroblastoma in remission.
Dong Woo Son, Bum Soo Park, Jun Jae Kim, Hong Hoe Koo, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(5):720-729.   Published online May 31, 1991
As childhood cancer survivors are now increasing in number owing to the improvements in diagnosis, staging, and treatment, concerns have been raised regarding the quality of survival of these patients. One of the limitation to quality and length of survival has been the development of second malignant neoplasm (SMN). In Korea, only one case of SMN has been reported. However, one can expect that...
Two cases of nasopharyngeal carcinoma in children.
Tae Sun Ha, Chul Ho Jang, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(4):587-593.   Published online April 30, 1991
Nasopharyngeal carcinoma is a primary malignancy of nasopharyngeal epithelium, firstly de- scribed as a separate entity by Regaud and Schmincke in 1921. Although it is a rare tumor, reprsent- ing less than 1% of pediatric malignancies, it accounts for 9% of the nasopharyngeal neoplasms of childhood, and has not been reported in Korean child. We experienced two cases of nasopharyngeal carcinoma in a 10...
Malignant Schwannomas in children.
Joon Jai Kim, Dong Joo Shin, Dong Won Son, Hong Hoe Koo, In Sang Jeon, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(4):525-531.   Published online April 30, 1991
Six pediatric patients who were diagnosed as malignant Schwannoma and treated at Seoul National University Children’s Hospital from Aug. 1981 to Jun. 1990 were reviewed. Mean age was 11 years and 1 month and all cases except one were over 10 years old. Of six cases, three (50%) were associated with von Recklinghausen’s disease. Overall male to female ratio was 1 : 2. In...
Clinical study of Kasabach-Merritt syndrome.
Eun Jung Bae, Young Ah Lee, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(3):371-379.   Published online March 31, 1991
A retrospective analysis of clinical findings in 20 patients with Kasabach-Merritt syndrome who visited Department of Pediatrics, Seoul National University Hospital from January, 1979 to June, 1990 was performed. The average age of occurrence was 6.4 month and male to female ratio was 1: 1.2. The mean size of hemangioma was 11.0x8.5 cm and the locations were cutanous in 18 (extrem- ities 5, trunk...
Clinical considerations of acute leukemia or transient myeloprolifo- rative disorder in Down syndrome.
Eun Sil Dong, Sung Hee Jang, Hong Hoe Koo, Hye Lim Jung, Hee Young Shin, Hyo Seop Ahn
Clin Exp Pediatr. 1991;34(1):74-82.   Published online January 31, 1991
Children with Down syndrome have an increased incidence of acute leukemia. Infants with Down syndrome are also at risk of developing a transient myeloproliferative disorder indistinguishable from acute nonlymphocytic leukemia (ANLL) except by its eventual clinical recovery. We observed 11 patients with acute leukemia or transient myeloproliferative disorder in Down syndrome who had admitted to the Departmetn of Pediatrics, Seoul National University Children’s Hospital,...
A Clinical Study of Childhood Non-Hodgkin's Lymphoma.
In Sang Jeon, Hyo Seop Ahn, Chong Ku Yun
Clin Exp Pediatr. 1990;33(6):807-820.   Published online June 30, 1990
To study the clinical characteristics and treatment result of childhood NHL, the retrospective study was performed on 82 children with NHL, experienced at the department of Pediatrics, Seoul National University Hospital, during 10 years from January 1979 to December 1988. The results were as follows; 1) The sex ratio of male to female was 2.4:1. 2) The age of patients ranged from 8 months to 15 years,...
A case of Second Malignant Neoplasm Complicating Hodgkin's Disease in Remission.
Hong Hoe Koo, Jong Woon Choi, Sang Oh Na, Il Soo Ha, Hee Young Shin, Hyo Seop Ahn, Yeon Lim Suh, Chul Woo Kim, Je Geun Chi
Clin Exp Pediatr. 1990;33(4):564-572.   Published online April 30, 1990
Recent advances in the treatment of cancer have resulted in increased survival and possible cure for many malignant disorders, particularly childhood cancers. There has been a marked improvement in the treatment of childhood Hodgkin’s disease, and five-year survival rates for even advanced stages of Hodgkin’s disease approach or exceed more than 75% with modern treatment policies. However, successful therapy in childhood cancer is frequently...
A case of congenital dyserythropoietic Anemia.
Sang Oh Na, Seong Hoon Ha, Hong Hoe Koo, Hee Young Shin, Il Soo Ha, Hyo Seop Ahn, Doek Ja Oh, Myoung Hee Park
Clin Exp Pediatr. 1990;33(3):410-415.   Published online March 31, 1990
The congenital dyserythropoietic anemia refers to a group of hereditary disorders of erythropoiesis characterized by ineffective erythropoiesis, multinuclearity of erythroblasts, and secondary hemo- chromatosis. The authors report a case of anemia in a 4 month-old girl whose bone marrow showed dyserythropoietic features. A brief review of referential literatures was made.
Cardiac Tumor in Children.
Eun Jung Bae, Young Hwue Kim, Jung Yun Choi, Yong Seung Hwang, Hyo Seop Ahn, Yong Soo Yun
Clin Exp Pediatr. 1990;33(11):1540-1547.   Published online November 30, 1990
Primary cardiac tumor is very rare and has been a medical curiosity but is potentially curable by current management with improvements of the imaging apparatus and the surgical technique. Metastatic cardiac tumor is also very rare and is more difficult to diagnose than primary ones because of lack of specific symptoms. Twelve cases of cardiac tumor, collected from 1978 to 1989 at the Department...
Whole Cow's milk Related iron Deficiency Anemia in Early Childhood.
In Sang Jeon, Heon Seok Han, Hyo Seop Ahn, Jin Q Kim
Clin Exp Pediatr. 1990;33(10):1374-1379.   Published online October 31, 1990
To study the relationship between large amount of whole cow’s milk (WCM) intake and iron deficiency anemia (IDA) in early childhood, we carried out the study on 9 children with IDA, who were fed WCM, about 1,000 ml over 3 months, experienced at the department of Pediatrics, Seoul National University Hospital, during 5 months from March 1989 to July 1989. The results were as...
A Case of Mucinous Cystadenocarcinoma in a Premenarchal Girl.
Hong Hoe Koo, Sang Oh Na, In Sang Jeon, Hyo Seop Ahn, Wan Suk Park, Suk Koo Lee, Kwi Won Park, Chong Jai Kim, Je Geun Chi
Clin Exp Pediatr. 1990;33(1):124-128.   Published online January 31, 1990
In childhood, cancer of the ovary is highly unusual. It is responsible for only 1—2% of cancers found in patients under the age of 17. The frequency with which the various histologic types of ovarian neoplasm occur in childhood differs from that in adults. Epithelial tumors account for 70% to 80% of ovarian neoplasms in adults but only 20% in patients less than...
A Case of Bilateral Wilms' Tumor.
Hyun Jun Cho, In Sang Jeon, Hyo Seop Ahn, Hwang Choi
Clin Exp Pediatr. 1990;33(1):117-123.   Published online January 31, 1990
Bilateral Wilms’ tumor is a relatively uncommon disease. We experienced a case of bilateral Wilms’ tumor in a 3 year 9 month-old boy. He had favorable histology on the both sides with pulmonary metastasis. Chemotherapy and radiation therapy on the lung and left renal bed were performed after left radical nephrectomy with biopsy on the right tumor. There was a good response to chemotherapy...
Cyclophosphamide-Induced Hemorrhagic Cystitis in Acute Lymphocytic Leukemia and Non-Hodgkin Lymphoma.
Young Seo Park, Il Soo Ha, Soon Ki Kim, Hae Il Jung, Yong Choi, Hyo Seop Ahn
Clin Exp Pediatr. 1989;32(5):665-669.   Published online May 31, 1989
We studied the cyclophosphamide-induced hemorrhagic cystitis in 72 cases of acute lymphocytic leukemia or Non-Hodgkin lymphoma, which had been treated at Seoul National University Children' s Hospital from June, 1985 to May, 1988 1) Among 72 cases treated with cyclophosphamide, 6 cases(12.8%) developed hemorrhagic cystitis in 47 cases of acute lymphocytic leukemia and 2 cases(8.0%) in 25 cases of Non-Hodgkin lymphoma. 2) The development of...
Infections in Childhood Leukemia.
Choong Won Lee, Young Sik Kim, Byung Kyu Park, Soon Ki Kim, Il Soo Ha, Hoan Jong Lee, Hyo Seop Ahn
Clin Exp Pediatr. 1989;32(5):659-664.   Published online May 31, 1989
A retrospective study was performed on twenty-nine children, who had experienced infection one or more times, among the thirty-eight children diagnosed as leukemia at the Department of Pediatrics, Seoul National University Hospital, between January, 1984 and June, 1985, and followed up for more than three years. The results were as follows; 1) The age of patients ranged from I year 5 months to 14 years...
A clinical study on histiocytosis X.
Sang Oh Na, Joong Gon Kim, Hyo Seop Ahn
Clin Exp Pediatr. 1989;32(11):1510-1519.   Published online November 30, 1989
We made a clinical study on 31 cases of histiocytosis X who had been admitted to the Dept, of Ped. of S.N.U.C.H. from Jan. 1981 to Dec. 1987. Among 31 cases, 28 patients received chemotherapy to include prednisolone, vinblastine, methotrex- ate and cyclophosphamide as induction therapy, and 6-mercaptopurine, methotrexate and cyclophos- phamide as maintenance therapy. The results obtained were as follows. 1) The sex incidence revealed male...
Three Cases of Typhlitis during Treatment for Acute Myelocytic Leukemia in Children.
Soon Mee Park, Il Soo Ha, Hoan Jong Lee, Jeong Kee Seo, Hyo Seop Ahn, Kyung Mo Yeon
Clin Exp Pediatr. 1989;32(10):1455-1462.   Published online October 31, 1989
Typhlitis is a rare necrotizing colitis in which inflammation is confined to cecum. It occurs during chemotherapy for malignancies, in terminal stage of aplastic anemia, in transplant patients. The pathogenesis of typhlitis has included leukemic infiltration of the bowel, thrombocytopenia, direct toxic effects of chemotherapy, steroid, bacterial invasion of the bowel wall secondary to neutropenia and alteration of the bowel flora by broad-spectrum antibiotics....
Angiolymphoid Hyperplasia with Eosinophilial: Kiruma's disease.
Choong Won Lee, Young Sik Kim, Soon Ki Kim, Il Soo Ha, Hyo Seop Ahn, Je Geun Chi, Il Han Kim
Clin Exp Pediatr. 1989;32(10):1416-1421.   Published online October 31, 1989
Kimura’s disease is a rare, benign disease characterized by single or multiple subcutaneous nodules, eosinophilia and distinctive histopathologic features. Seven cases of Kimura’s disease under 15 yeaps of age who were admitted to the Dept, of Pediatrics, Seoul National University Hospital from Apr. 1983 to July 1987 were reviewed. The results were as follows: 1) The lesions were noted between the ages of 28 months and...
Treatment of Acute Myelogenous Leukemia in Children: Remission Induction with Adriamycin and Cytosine Arabinoside, and Postremission Maintenance Chemotherapy with Adriamycin, Cytosine Arabinoside and 6-thioguanine.
Soon Ki Kim, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1988;31(7):850-862.   Published online July 31, 1988
The authers assessed the effectiveness of chemotherapy in 40 children with AML, experienced at Seoul National University Children’s Hospital during 8 years 5 months from April 1979 to August 1987. Remission induction treatment included adriamycin 30 mg/m2/day IV on days 1-3 and cytosine arabinoside 75 mg/m2/day continuous IV infusion on days 1-5. This regimen was repeated, if necessary, for one or two more courses. After...
A Clinical Observation on the Incidence of Childhood Leukemia.
Hyo Seop Ahn, Il Soo Ha, Soon Ki Kim, Hoan Jong Lee, Chang Yee Hong
Clin Exp Pediatr. 1988;31(7):841-849.   Published online July 31, 1988
We have analysed the type, age, sex, initial hematologic values and cell markers in 295 children, who had been diagnosed as leukemia at the department of pediatrics, Seoul National University Hospital, from Jan. 1983 to Dec. 1987. The patients were composed of 197 cases (66.8%) of ALL, 82 cases (27.7%) of ANLL and 16 cases (5.5%) of CML. FAB subclassification have been done in...
Endodermal Sinus Tumor in Children.
Jae Sun Jung, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1988;31(6):772-778.   Published online June 30, 1988
Thirty-three cases of endodermal sinus tumor were reviewed. They were diagnosed at Seoul National University Hospital over the last 9 years. Sixteen were testicular, 12 were sacrococcygeal and the others were mediastinal, vaginal, ovarian, retrovesical and tongue endodermal sinus tumor. Endodermal sinus tumor of the tongue was the first reported case in the world. Serum 公-fetoprotein of 32 cases was elevated at diagnosis and...
Burkitt Lymphoma in Children.
Soo Jong Hong, Dong Kyu Jin, Hee Young Shin, Hyo Seop Ahn, Chang Yee Hong, Je G Chi
Clin Exp Pediatr. 1988;31(4):482-491.   Published online April 30, 1988
Seventeen cases of Burkitt lymphoma under 15 years of age who were admitted to Dept, of Ped., Seoul National University Hospital from Jan. 1979 to Dec. 1986 were reviewed and analysed. One hundred and six cases of non-Hodgkin lymphoma were seen during the same period. 1) Burkitt lymphoma accounted for 16% of non-Hodgkin lymphoma. 2) The age ranged from 10/12 year to 15 5/12 years, with...
Acute Tumor Lysis Syndrome in Burkitt Lymphoma.
Dong Kyu Jin, Soo Jong Hong, Il Soo Ha, Hyo Seop Ahn, Yong Choi, Chang Yee Hong
Clin Exp Pediatr. 1988;31(3):362-369.   Published online March 31, 1988
To assess the tumor lysis syndrome in Burkitt lymphoma, we analyzed the clinical and laboratory findings of 17 patients with Burkitt lymphoma who were admitted to the Department of Pediatrics, Seoul National University Hospital from January 1979 to December 1986. The acute tumor lysis syndrome was diagnosed when two of the five following metabolic abnormal- ities were met: ① hyperuricemia (≥8.0mg/dl), ② hyperphosphatemia (≥5.5 mg/dl),...
High-Dose Cytosine Arabinoside (HD Ara-C) Therapy for Refractory Acute Leukemia in Children.
Il Soo Ha, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1988;31(10):1328-1337.   Published online October 31, 1988
Eleven children with refractory acute leukemia were treated with high dose cytosine arabinoside (HD Ara-C), given at a dosage of 3 gm/m2 intravenously over about one hour every 12 hours for four to eight doses. The antileukemic effects were evaluable in nine of the patients, two with ALL, seven with ANLL. Six of the seven patients with ANLL attained complete remission, while neither...
Clinical Observation on Splenectomized Children.
Mi Ryung Um, Jae Won Song, Yong Yull Koh, Jeong Kee Seo, Hyo Seop Ahn, Chang Yee Hong, Kwi Won Park
Clin Exp Pediatr. 1987;30(5):511-517.   Published online May 31, 1987
A clinical study was performed on 26 cases of splenectomized children who had been seen at the Department of Pediatrics, Seoul National University Hospital, during the period of 7 years 7 months from January 1978 to July 1985. The results were as follows: 1) Primary diseases were hereditary spherocytosis (8 cases), Hodgkin disease for staging laparotomy (8 cases), ...
Gangliosides in Malignancy.
Hyo Seop Ahn
Clin Exp Pediatr. 1986;29(6):583-586.   Published online June 30, 1986
Case Report
Two Cases of Hemolytic Disease of Newborn due to Anti-E.
Se Won Park, Young Sun Kim, Jung Hwan Choi, Hyo Seop Ahn, Chong Ku Yun
Clin Exp Pediatr. 1986;29(2):203-208.   Published online February 28, 1986
Isoimmune hemolytic disease of the newborn is a disease which is caused by maternal sensitization to one of the fetal blood factors. This report presented two esses of isoimmune hemolytic disease due to anti-E in 2 male newborns who were admitted to Seoul University Hospital because of jaundice. Antibody screening and antibody identification tests were made which revealed anti-E antibody...
Hodgkin’s Disease in Children
Soo Jong Hong, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1986;29(12):1352-1359.   Published online December 31, 1986
Twenty one cases of Hodgkin’s disease under 15 years of age who were admitted to Dept, of Ped. of Seoul National University Hospital from Jan. 1976 to Dec. 1985 were reviewed and analysed. One hundred and five cases of non-Hodgkin’s lymphoma were seen during the same period. 1) The ratio of non-Hodgkin’s lymphoma to Hodgkin's disease was 5:1. 2) The age ranged from 18/12 years...
Original Article
Herpes Zoster in Children.
Soon Ki Kim, Hoan Jong Lee, Hyo Seop Ahn
Clin Exp Pediatr. 1986;29(12):1324-1333.   Published online December 31, 1986
Herpes zoster, an inflammatory human disease caused by varicella-zoster virus, is characterized by papulovesicular lesions along the distribution of a sensory nerve. Herpes zoster infection, known to be benign in normal children, is more frequent and severe in immunosuppressed patients and is associated primarily with increased morbidity rather than mortality. We analysed retrospectively the clinical manifestations of herpes zoster infections...
Experimental Diphtheritic Myocarditis with Special Reference to Ultrastructural Changes.
Hyo Seop Ahn
Clin Exp Pediatr. 1986;29(12):1295-1308.   Published online December 31, 1986
Myocardiopathy following diphtheria infection is one of the most serious and fatal complications, but its nature of the lesion remained in controversy, and even ultrastructural understanding on the direct effect of diphtheria toxin has not been clarified. The purpose of this experiment is to illustrate the full morphological spectrum of subclinical or EKG free diphtheritic myocardial injuries by administration of...
Case Report
A Case of Chronic Myelogenous Leukemia in a Child Treated in a Interferon.
Ill Soo Ha, Jon Lin Rhi, Se Jung Sohn, Dug Ha Kim, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1986;29(11):1232-1238.   Published online November 30, 1986
A child with Ph^positive chronic myelogenous leukemia was treated with human leukocyte interferon (Hu IFN-alpha). Hematologic remission was obtained in 16 weeks of treatment, and white blood cell count was decreased in number from 115,000 to 9,600. Platelet:count, spleen size, LDH and bone marrow M/E ratio were decreased in parallel, but there was no significant change in serum vitamin B12...
Three Cases of Congenital Hypoplastic Anemia.
Heui Jeong Kwon, Myung Hyun Lee, Jung Hwan Choi, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1985;28(8):829-835.   Published online August 31, 1985
Congenital hypoplastic anemia is a rare disease characterized by aplasia or severe hypoplasia of the erythron, with onset usually at birth or during early infancy. This report presented three cases of congenital hypoplastic anemia in 3 infants with pallor and irritability which were noticed since one to three months of age. Three cases were treatsd with prednisolone and the courses of...
Original Article
A clinical study on Myasthenia gravis in childhood.
Yong Seung Hwang, Hyo Seop Ahn, Sang Hyup Kim
Clin Exp Pediatr. 1985;28(2):154-159.   Published online February 28, 1985
Twenty-six cases of myasthenia gravis (MG) in childhood who were diagnosed and treated in the Department of Pediatrics, Seoul National University Hospital from January 1976 till October 1984 were reviewed clinically. Mean age of onset of MG was 5.4+3.6 years of age with the peak incidence at 2 years of age. Sexual difference was negligible as male to female ratio...
Case Report
A Case of Niemann-Pick Disease with Sea-Blue histiocytes in the Bone Marrow.
Young Sun Kim, Soo Heum Lim, Jeong Kee Seo, Hyo Seop Ahn, Hyung Ro Moon
Clin Exp Pediatr. 1985;28(12):1238-1244.   Published online December 31, 1985
A case of Niemann-Pick disease in a 12 year and 6 month old Korean male was reported. The patient showed marked hepatosplenomegaly without neurologic symptoms. Fundoscopic examination revealed a cherry-red spot with white ring in the maculae. Numerous foamy histiocytes and sea-blue histiocytes were seen in the bone marrow. The liver biopsy specimen showed the diffuse ballooning of hepatocytes obliterating...
Original Article
Clinical Study of Wilms' Tumor .
Myung Hyun Lee, In Sil Lee, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1984;27(6):603-609.   Published online June 30, 1984
Thirty-five cases of Wilms tumor treated at the Seoul National University Hospital from 1969 to 1983, were analyzed and the results are as follows: 1)Ages at nephrectomy were from 1 monh. to 11 years and 8 months. The mean, age was 3 years and 4 months and the median was 2 years and 9 months. The sex ratio of male...
Clinical Observation of Acute Lymphocytic Leukemia with Mediastinal Mass.
In Sil Lee, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1984;27(4):343-349.   Published online April 30, 1984
Twenty four cases of acute lymphocytic leukemia with mediastinal mass were studied at the Department of Pediatrics, Seoul National University Hospital from September 1965 to August 1983. Analysis were done with regard, to age, sex, chief complaints, organ size (liver, spleen and lymph nodes), initial hemoglobin, white blood cell and platelet count, initial bone marrow findings and lymphoblast surface markers....
Clinical Review of Abdominal Masses in Infant and Children .
Dong Hyun Choo, Chong Young Pakr, Sang Pok Suk, Jeong Kee Seo, Hyo Seop Ahn, Kwang Wook Ko
Clin Exp Pediatr. 1984;27(12):1202-1212.   Published online December 31, 1984
One hundred and ninety four patients who were admitted with the chief complaint of abdominal mass were reviewed. The result were as follows; 1) The common abdominal masses in infants and children were neuroblastoma, Wilms tumor, germ cell tumor, hydronephrosis and hepatoblastoma in decreasing order of frequency. Malignant tumors were 114 cases and benign tumors were 69 cases. 2) The male:female ratio was 110 : 84. In...
A Study on Frequency of Malignant Tumors in Children.
Chang Yee Hong, Hyo Seop Ahn, Byung Kwan Sohn, Son Moon Shin, In Sil Lee
Clin Exp Pediatr. 1983;26(5):489-498.   Published online May 31, 1983
Five hundred and thirty-nine cases of malignant tumors (excluding leukemia) under 15 years of age who were admitted to Seoul National University Hospital from January 1967 to December 1981 were reviewed and analysed. Three hundred and ninety-nine cases of leukemia were seen during the same period and total 938 cases of malignancies including leukemia were observed. 1. The frequency of malignant tumors...
Case Report
A Case Report Kostmann Syndrome.
Han Wook Yoo, Son Moon Shin, Hyo Seop Ahn, Yong Choi, Chang Yee Hong
Clin Exp Pediatr. 1983;26(3):284-288.   Published online March 31, 1983
Kostmann syndrome (Infantile genetic agranulocytosis), a disease characterized by recurrent infections leading to death in infancy, shows an agranulocytosis with variable monocytosis, eosinophilia in the peripheral blood, accompanied by the maturation arrest of the myelocytic series at the promyelocyte-myelocyte level. A 2 years 3 month old female patient with Kostmann syndrome is reported, who has suffered from recurrent infections since 1 month of age. During...
A Case of Trensient Myeloproliferative Disorder with Down Syndrome.
Dong Gyoon Kim, Jae Ho Lee, Jung Il Noh, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1983;26(10):1024-1028.   Published online October 31, 1983
Transient myeloproliferative disorder has been reported in infants with Down syndrome. Infants with Down syndrome and this transient myeloproliferative disorder often present with signs and symptoms that are clinically and hematologically indistinguishable from congenital acute myelogenous leukemia. In contrast to congenital AML, complete clinical and hematological recovery occurs within weeks to months of diagnosis without any specific anti- leukemic treatment. A case of transient myeloproliferative disorder...
Two Case of Ginaotti-Crosti Syndrome.
Jae Ho Lee, Soon Ung Kang, Jeong Kee Seo, Hyo Seop Ahn, Kwng Wook Ko, Won Suk Kim
Clin Exp Pediatr. 1982;25(12):1289-1294.   Published online December 31, 1982
The Gianotti-Crosti syndrome is an. infrequently recognized disorder with distinctive clinical features. We have experienced two cases of Gianotti-Crosti syndrome diagnosed by clinical manifestation, laboratory data and histopathologic finding of skin. Case one; An 18-month-old girl was admitted to the pediatric ward with the chief complaint of erythematous rash. Its onset was preceded by an. upper respiratory tract infection. She had a wide spread erythematous...
Original Article
Testicular Leukemia.
Young Jin Hong, Jung Yeun Choi, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1982;25(1):29-35.   Published online January 31, 1982
Leukemic infiltration of the testes has been relatively rare disease. But increased survival due to advance in the treatment of childhood leukemia has been associated with an increase in incidence of leukemic infiltration of the tests. Six of 66 male children with acute lymphocytic leukemia and 2 of 2 male children with leukemic transformation on non-Hodgkin's lymphoma, who have been...
Clinical Observation on Factors Influencing Survival in Pediatric Acute Lymphocytic Leukemia.
Chang Yee Hong, Jung Yeun Choi, Hyo Seop Ahn
Clin Exp Pediatr. 1982;25(1):8-18.   Published online January 31, 1982
Sixty two properly treated acute lymphocytic leukemia cases who were diagnosed at SNUH, from 1958 to July, 1981 were studied. Among them, 20 cases had survived more than 3 years and 42 cases survived less than 3 years. The 11 cases of 20 are now alive and off theray and the remainder 9 cases were expired after survival for more...
Treatment of Aplastic Anemia with Lithium Carbonate.
Chang Yee Hong, Hyo Seop Ahn
Clin Exp Pediatr. 1981;24(7):620-624.   Published online July 15, 1981
The effect of lithium carbonate was investigated on the five cases of aplastic anemia with measuring of serum level and EKG check. Reticulocyte count increased slightly only in one case. Hemoglobin, WBC and platelet count did not show any significant increase in all cases. No apparent side effect, including EKG finding, was observed.
Case Report
A Case of Congenital Hepatic Fibrosis.
Son Moon Shin, Sang Il Lee, Joong Gon Kim, Hyo Seop Ahn, Hyung Ro Moon, Kwang Wook Ko, Je Geun Chi
Clin Exp Pediatr. 1981;24(6):577-583.   Published online June 15, 1981
Congenital hepatic fibrosis is a relatively rare liver disease in children and young adults,that is characterized by stony hard hepatomegaly and portal hypertension with relative preservation of liver function and underlying architecture. Since this Condition was first delineated by Kerr et al in 1961, approximately over 150 cases have been reported in the literature. However, congenital hepatic fibrosis was not...
Original Article
Clinical Obseervation for Hematologic Disorders in Children.
Eung Sang Choi, Soon Ung Kang, Jeong Kee Seo, Hyo Seop Ahn, Chang Yoo Hong
Clin Exp Pediatr. 1981;24(3):235-244.   Published online March 15, 1981
Nine hundred and twenty-three cases of hematologic disorders in children who were admi-tted to department of pediatrics, SNUH, from 1955 to Oct. 1980 were analysed. The patients consisted of 624 males and 299 females. The results were as follows; 1.Mean annual percentage of hematologic patients among total admitted patients was 6.8%. 2.The peak age incidence of various hematologic disorders was...
Case Report
Fanconi Anemia.
Sang Il Lee, Young Yul Koh, Jung Gi Suh, Hyo Seop Ahn, Chang Yee Hong
Clin Exp Pediatr. 1981;24(2):153-163.   Published online February 15, 1981
Five cases of Fanconi anemia were observed during these 7 *years. It acounts for about 6.7% of the total 75 aplastic anemia seen during those same period in SNUH. Three were boys and two were girls. The initial symptom was nasal bleeding or pallor which observed between the age of 2 years and 6 years. They all revealed growth retardation...
Original Article
Histiocytic Medullary Reticulosis in Children: Report of Four Cases and Analysis of Previously Reported Cases.
Eue Cho Yang, Jae Ho Lee, Soon Ung Kang, Hyo Seop Ahn, Chang Yee Hong, Je G Chi, Yong Il Kim
Clin Exp Pediatr. 1981;24(10):928-941.   Published online October 15, 1981
Histiocytic Medullary Reticulosis(H.M.R.) is a rapidly progressing fatal disease seen most often in adults, but it has been reported in children younger than 15 years of age. H.M.R. is clinically characterized by fever, wasting generalized lymphadenopathy and hepatosplenomegaly. In the terminal stage, jaundice, purpura, anemia and pancytopenia are all present with or without skin involvement. Cardinal pathologic features are systemized...
Case Report
Late Hemorrhagic Disease of Infancy.
Joong Gon Kim, Young Min Ahn, Hyo Seop Ahn, Yong Choi, Kwang Wook Ko
Clin Exp Pediatr. 1980;23(7):572-577.   Published online July 15, 1980
A hemorrhagic disease due to prothrombin complex deficiency os described in 4 infants from 1 to 11 months of age. This disease is different from the hemorrhagic disease of the newborn. The main differences are that it is found in an older age group and that intracranial hemorrhages are frequent. Rapid clinical and laboratory response after vitamin K therapy are...
Original Article
Brain Abscess in Congenital Heart Disease
Chang Yee Hong, Hyo Seop Ahn, Heung Jai Lee, Byung Kwan Son
Clin Exp Pediatr. 1976;19(12):904-914.   Published online December 31, 1976
Clinical observation was performed on 9 cases of brain abscess which were complicated with cyanotic congenital heart disease which were seen at the Department of Pediatrics, Seoul National University Hospital, during the past 19 years from 1957 to 1976. 1. During the last 19 years 1, 296 cases of [congenital heart disease were observed, and among these, 432 cases were cyanotic....
Clinical Observation of Aplastic Anemia in Children
Chang Yee Hong, Hyo Seop Ahn, Heung Jai Lee
Clin Exp Pediatr. 1975;18(7):489-498.   Published online July 31, 1975
Clinical observation was performed on 64 cases of aplastic anemia which were seen at the Department of Pediatrics, Seoul National University Hospital, during the past 14 years 2 months period from Aug. 1960 to Oct. 1974. The results were as follows; 1.During the last 14 years 2 months, 64 cases of aplastic anemia were observed, which represents about 0.6% of...
Case Report
A Case of Acute Cerebellitis
Yong Soo Yoon, Hyo Seop Ahn, Sang Hyeup Kim
Clin Exp Pediatr. 1975;18(10):751-757.   Published online October 31, 1975
A case of acute cerebellitis in a 6 year and 8 month-old male was presented. The patient was admitted with the chief complaints of gait ataxia, inability to sit and stand alone after awaken from bed since the morning of admission day. Six days prior to admission, fever, anorexia, and malaise developed and soon after followed by pruritic maculo-papular rashes...
A Case of Chronic Atrial Tachycardia
Hyo Seop Ahn, Yong Choi, Tae Woon Kim, Chong Ku Yoon, Chang Yee Hong, Johng Kun Ahn
Clin Exp Pediatr. 1974;17(2):149-153.   Published online February 28, 1974
A case of chronic atrial tachycardia in a 1 1 year and 10 month-old boy is reported. The patient was admitted with the chief complaints of palpitation and chest discomfort Tachycardia persisted till discharge but subjective symptoms were disappeared. Digitalis therapy provoked partial AV block and decreased ventricular rate. Auricular rate was also slightly decreased. The review of literature was made briefly.
A Case of Total Anomalous Pulmonary Venous Return
Hyo Seop Ahn, Soon Young Kim, Tae Woon Kim, Jong Ku Yoon, Hyung Ro Moon, Chang Yee Hong, Hye Soon Chang, Man Cheong Han
Clin Exp Pediatr. 1973;16(2):156-160.   Published online February 28, 1973
A case of total anomalous pulmonary venous return in a 10 year and 8 month-old female was presented. The patient was admitted with the chief complaints. of palpitation and growth retardation. The diagnosis was confirmed by right heart catheterization and angiocardiography. The review of literature was made briefly.
Original Article
Statistical Observation of Heart Disease in Children
Hyo Seop Ahn
Clin Exp Pediatr. 1973;16(12):935-954.   Published online December 31, 1973
Statistical observation was performed on 1,278 cases of heart disease which were seen at the department of pediatrics, Seoul National University Hospital, during the past 15 years and 9 months period from Oct. 1957 to June 1973. The results were as follows; 1.During the last 15 years and 9 months, 1,278 cases of heart disease were observed, which represents about...
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