目前在我国,巨幼细胞贫血(megaloblastic anemia,MA)仍是一种常见的多发病,但其流行病学情况尚缺乏详细的统计数据。据对2009年至2011年国内1 945例MA病例的分析显示[1],患者平均年龄为60岁,平均血红蛋白水平为58.8 g/L,其中约95%的患者系因叶酸或(和)维生素B12缺乏引起的营养性贫血[2]。诊断巨幼细胞贫血时,应遵循以下步 Currently in our country, megaloblastic anemia (MA) is still a common frequently-occurring disease, but the epidemiological situation is still lack of detailed statistics. According to an analysis of 1,945 MA cases from 2009 to 2011 in China, 1 the average age of patients was 60 years with a mean hemoglobin level of 58.8 g / L, of which about 95% were due to folic acid or (and) vitamins B12 deficiency caused by nutritional anemia [2]. When diagnosing megaloblastic anemia, follow these steps