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설형 ( Hyoung Sul ),문우람 ( Woo-ram Moon ),이희정 ( Hee-jeong Lee ),박상곤 ( Sang-gon Park ),정춘해 ( Choon Hae Chung ),박치영 ( Chi-young Park ) 대한내과학회 2017 대한내과학회지 Vol.92 No.2
Pernicious anemia is a macrocytic anemia that is caused by vitamin B12 deficiency, itself a result of the absence of intrinsic factors due to autoimmune destruction of parietal cells. We report here the case of a 43-year-old female with spontaneous remission of pernicious anemia. The patient presented with fatigue. Her serum vitamin B12 level was low, hemoglobin level was 7.6 g/dL, and serologic tests for anti-intrinsic factor and anti-parietal cell antibodies were positive. We diagnosed her with pernicious anemia, but did not administer vitamin B12 because her hemoglobin level increased spontaneously. Since then, the patient`s hemoglobin and serum vitamin B12 levels have been within the normal range. (Korean J Med 2017;92:209-212)