赵某、男、1 8/12岁,因面色苍白8个月加重伴乏力于94年3月4日入院。入院前8个月曾发热2天,用青霉素,庆大霉素2天后热退。自此后,面色渐苍白,消瘦,但精神胃纳尚可,近2月发现面色由苍白变苍黄,神萎、乏力、少动,在当地县医院查血象Hb3.2～5.2g/L,RBC1.03～1.60×10~(12)/L,WBC3.4×4.4×10~9/L,给予维生素B_(12)和补血露等治疗2月无效,并进行性加重,入院前20天更加严重,曾昏厥2次休息数分钟好转,无出血倾向。除母奶喂养至今外,过去史,家族史无特殊。入院体检:发育营养中下,慢性病容,神萎,重度 Zhao, male, 1 8/12 years old, pale due to 8 months aggravating with fatigue on March 4, 94 admission. 8 months before admission, fever 2 days, with penicillin, gentamicin 2 days after the heat back. Since then, the face gradually pale, thin, but the spirit of appetite is still available, nearly 2 months found pale from the pale, Shen Wei, fatigue, sedentary, check the local county hospital Hb3.2 ~ 5.2g / L blood, RBC1 .03 ~ 1.60 × 10 ~ (12) /L, WBC3.4 × 4.4 × 10 ~ 9 / L, giving vitamin B_ (12) and bleeding and other treatments in February invalid, and progressive increase in 20 days before admission more Serious, had fainted 2 times a few minutes to rest, no bleeding tendency. In addition to breastfeeding so far, the past history, no special family history. Admission medical examination: the development of nutrition in the next, chronic disease, Shen Wei, severe