原发性血小板增多症(Primary Hyper thrombocythemia)是一种比较少见的以巨核细胞系列增殖为主的骨髓增生性疾病。本病多见于40岁以上成人,小儿病例尚乏报道。现将我们所遇一例患儿,报告于下: 患儿,男、11岁,住院号49794,因持续流牙血9天于82年10月10日入院。患儿于10月2日用手摇动松动的牙齿,引起牙龈渗血不 Primary Hyper Thrombocythemia is a rare myeloproliferative disorder characterized by proliferation of megakaryocytes. The disease more common in adults over the age of 40, pediatric cases are still lack of coverage. Now we have encountered a case of children, the report is as follows: children, male, 11 years old, hospital number 49794, 9 days of continuous flow of teeth due to be admitted on October 10, Children on October 2 by hand loose loose teeth, causing bleeding gums not