患儿男,1岁。于8个月时因腹泻口服氯霉素4次,每次0.25g,此后面色渐苍白,曾在他院诊断为“缺铁性贫血”,经口服铁剂及肌肉注射维生素B12等治疗,皮肤黏膜苍白仍进行性加重入院。查体:体温36.4℃,发育正常,精神尚好,全身皮肤无出血点及黄染。皮肤、口唇、脸结膜、口腔黏膜、甲床苍 Children male, 1 year old. At 8 months, oral chloramphenicol was given 4 times for each diarrhea, 0.25g each time. After this time, the color gradually became pale and was diagnosed as “iron deficiency anemia” in his hospital. After oral iron and intramuscular injection of vitamin B12, Mucosal pale progressive hospitalization. Physical examination: body temperature 36.4 ℃, normal development, the spirit is still good, systemic skin bleeding and yellow dye. Skin, lips, face conjunctiva, oral mucosa, nail bed Cang