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A Epidemiologic Study of Malignant Tumors of Children in Chonnam Area.

Journal of the Korean Pediatric Society 1988;31(1):78-85.
Published online January 31, 1988.
A Epidemiologic Study of Malignant Tumors of Children in Chonnam Area.
Myong Hee Kook, Hys Ran Min, Tai Ju Hwang
Department of Pediatrics, College of Medicine, Chonnam National University, Kwangju Korea
전남지역 소아 악성 종양에 대한 역학적 관찰
국명희, 민혜란, 황태주
전남대학교 의과대학 소아과학교실
Received: 25 July 1987
Abstract
A Total 655 cases of malignant tumors in childhood under 15 years of age who admitted to general hospitals in Chonnam area during the 10-year period from January 1976 to December 1985 were analysed. The frequency of malignant tumors among total pediatric inpatients was 2.64% (1.48〜4.52%) with tendency to increse year after year. In 1980, the number of population under 15 years of age was 1, 431,683, but decreased gradually to 1,268,039 in 1984. However, children’s cancer patients actually increased annually. In general male are affected more often than female with sex ratio (M/F) of 1.48:1. The most common malignancy was leukemia (43.05%). Out of 282 cases of leukemia, 174 cases (61. 70%) were acute lymphocytic, 78 cases (27.66%) were acute myelogenous, 12 cases (4.26%) were chronic myelogenous, and 18 cases (6.38%) were unclassified leukemia. The next common malignancy in childhood was brain tumor (16.03%), followed by lymphoma (9.16%), Wilms' tumor (6.11%), neuroblastoma and gonadal and germ cell tumor (4.43%), bone tumor (4.12%), retinoblastoma (3.66%), liver tumor (3.51%), and soft tissue tumor (3.36%) in order. Retinoblastoma and liver tumor were relatively prevalent compared to U.S.A. and European countries. About 38.32% of malignant tumors were found under 5 years of age. Wilms’ tumor, neuroblastoma, gonadal and germ cell tumor, retinoblastoma, and liver tumor were seen mostly before the age of 5 to 6 years, while brain tumor, lymphoma, and bone tumor have the tendency to increase the incidence over the age of 6 years. There were significant geographical differences in the incidence of malignancy per 100 thousand population under 15 years of age according to area to area. Overall incidence rate of childhood cancer was 5.17/105 population. Geographically, in Yeochon, Yeosu, Kwangju, Hwasun, Muan, and Gogseong were 8.85, 7.00, 6.95, 6.34, 5.98, and 5.58 per 100 thousand population respectively. Such high frequency rates in Yeochon and Yeosu were statistically significant (p<0.01). It appears that above results may offer some useful informations on the frequency rates of childhood malignancies in Chonnam area.
Key Words: Epidemiologic study of frequency, Childhood malignancies.


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