患者,男,22岁,因不规则上腹隐痛2a,柏油便1 d于1995年3月16日入院。查体无异常。白细胞6.1X10~9/L,大便潜血(册)。予以西咪替丁0.8g每天1次静点,3d后用量增加到1.2g。7d后大便潜血(一),停用西咪替丁。用药期间白细胞计数分别为4.0X10~9, 4.9X10~9,3.0X10~9/L。停药1周后白细胞计数2.9X10~9/L,血红蛋白、血小板正常。急行髂骨穿刺做骨髓检查,显示粒系增生减少,细胞形态正 The patient, male, aged 22, was admitted to hospital on March 16, 1995 due to irregular upper abdominal pain 2a and ashes. No abnormalities in the examination. WBC 6.1X10 ~ 9 / L, fecal occult blood (volume). Cimetidine 0.8g once a day to the static point, the amount of 3d increased to 1.2g. 7d after fecal occult blood (a), disable cimetidine. White blood cell count during treatment were 4.0X10 ~ 9, 4.9X10 ~ 9, 3.0X10 ~ 9 / L. 1 week after stopping the white blood cell count 2.9X10 ~ 9 / L, hemoglobin, platelets normal. Implantation of iliac bone marrow examination, showed decreased proliferation of granulocytes, positive cell morphology