急性原发性骨髓纤维化症比较少见,我院先后收治2例,现报告如下。例1,男,50岁,工人。以头昏,心悸,面黄2月,于1986年12月4日入院,既往身体健康,无有害物质接触史。查体:重发贫血貌,腹部少许出血点,肝大1cm,脾大5cm,质中硬。实验室检查:Hb56g/L,Wbc 6.76×10~9/L,原粒1％,晚幼粒7％,计数100个白细胞可见有核红细胞9个。BPC(血小板计数)33×10~9/L。成熟红细胞形态异常,可见泪滴 Acute primary myelofibrosis is relatively rare, our hospital has admitted to 2 cases, are as follows. Example 1, male, 50 years old, worker. To dizziness, palpitations, face yellow February, admitted on December 4, 1986, previous physical health, no exposure to harmful substances. Physical examination: re-anemia appearance, a little abdominal bleeding point, liver 1cm, splenomegaly 5cm, medium hard. Laboratory tests: Hb56g / L, Wbc 6.76 × 10 ~ 9 / L, 1% of the original particles, 7% of late promyelocytic, counted 100 white blood cells showed 9 nucleated erythrocytes. BPC (platelet count) 33 × 10 ~ 9 / L. Mature erythrocyte morphology abnormalities, we can see the teardrop