恶性贫血是由于胃液中缺乏内因子引起维生素B_(12)吸收障碍所造成的一种贫血。国内虽较罕见,但亦已有近20例报告。因其形态学上呈现巨幼细胞性贫血极易和可有骨髓巨幼改变的其它疾病如:红白 Pernicious anemia is an anemia caused by the imbalance of absorption of vitamin B 12 due to the lack of internal factors in gastric juice. Although rare in China, there have been nearly 20 reports. Because of its morphological appearance of megaloblastic anemia can easily change the bone marrow may have other diseases such as: red and white