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Review Article
Neonatology (Perinatology)
Pathophysiology, classification, and complications of common asymptomatic thrombocytosis in newborn infants
Ga Won Jeon
Clin Exp Pediatr. 2022;65(4):182-187.   Published online October 18, 2021
· Thrombocytosis, common in newborns and infants (<2 years) (3%–13%), is caused by elevated thrombopoietin (TPO) concentrations.
· Serum TPO levels are significantly higher immediately to 1 month postnatal and decrease with age.
· Platelet counts are positively correlated with gestational age at birth and postnatal age.
· Thrombocytosis is more common in preterm than in term infants.
· Thrombocytosis in newborns is reactive and resolves spontaneously without complications.
Original Article
Clinical Evaluation of Reactive Thrombocytosis in Childhood
Yoon Suck Suh, Young Yoo, Kwang Chul Lee, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 1992;35(5):607-613.   Published online May 15, 1992
The platelet coiunt has not been part of routine hematologic profiles until recently, when the newer electronic blood cell counters began to include platelet count with all other blood cell counts. With the widespread use of newer generation electronic blood cell counters, elevated platelets coiunts are being encountered more ofter in pediatric practice. We reviewed all cases of marked thrombocytosis to...
Thrombocytosis in Childhood
Seung Wan Lee, Young Jin Hong, Soon Wha Kim, Don Hee Ahn
Clin Exp Pediatr. 1992;35(2):211-218.   Published online February 15, 1992
Hundred and twenty five cases of thrombocytosis were observeed at National Medical Center between Jan. lst 1989 and June 30, 1990. The results were as follows; 1) In thrombocytosis, sewual difference was not noticed(61 male and 50 female children). 2) Age distributed from newborns to 15 years of age with median age of 5 months. 3) The platelet counts ranged from 750 to 1650×103...
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