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当前学科：血液科
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女性，26岁。头晕，乏力3年，维生素B
12
，叶酸治疗3个月，平时月经量较多。查血红蛋白75g/L，红细胞3.1×10
12
/L，白细胞4.5×10
9
/L，血小板20×10
9
/L，网织红细胞1.5%，尿胆原（-），大便隐血（-）。诊断考虑为（）
A . A.营养性巨幼细胞贫血
B . 缺铁性贫血.
C . 再生障碍性贫血
D . 溶血性贫血
E . 铁粒幼细胞性贫血
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