小儿血小板增多症很少见,临床无相应症状,常因其他疾病作血常规检查血小板≥75万/μl时而被发现。近一年多来我们发现3例,除1例肾病综合征伴有血小板增多已报道外,现将余2例报告如下。 [例1]男,17月,因高热2天伴流涕、咳嗽与呕吐2次,于1982年]2月2日入院。体温38.7℃(R),咽红,肺呼吸粗,肝肋下刚及,余无异常。拟诊上呼吸道 Thrombocytosis in children is rare, no clinical symptoms, often due to other diseases for routine blood test platelet ≥ 750,000 / μl was found. In the past year or so, we found 3 cases, except 1 case of nephrotic syndrome with thrombocytopenia has been reported, the remaining 2 cases are reported below. [Example 1] Male, 17 months, 2 days due to fever with runny nose, cough and vomiting 2 times, in 1982] February 2 admission. Body temperature 38.7 ℃ (R), throat red, thick lungs, liver ribs just, and no abnormalities. The proposed diagnosis of upper respiratory tract