血小板增多症在婴幼儿很少报导,因其不一定伴有症状。作者不到1年期间诊治10例患儿,他们的血小板计数都超过80万/毫米~3,为正常最高值(40万/毫米~3) 的2倍,全部病例都是由于患其他疾病入院时发现的。其中9例在3岁以下,6例为男孩,4例为女孩。出血对血小板的增生可能是一个刺激。本组有1 Thrombocytosis is infrequently reported in infants and young children because it is not necessarily accompanied by symptoms. The authors treated 10 children less than a year and had a platelet count of more than 800,000 / milligrams-3, which was twice the normal high value (400,000 / millimeter-3). All cases were admitted to hospital due to other illnesses When found. Of these, 9 were under 3 years of age, 6 were boys and 4 were girls. Bleeding may be an irritant to platelet proliferation. This group has 1