[Microangiopathic hemolytic anemia (MAHA) observed after administration of mitomycin C (MMC)]

An autopsy case of MAHA induced by MMC is reported. The patient received MMC and tegafur following operation for colon adenocarcinoma. Five months after the operation, the patient developed MAHA, thrombocytopenia, and renal impairment. MAHA was exacerbated by blood transfusions and he died of extensive pulmonary edema. Autopsy findings showed no residual carcinoma but microangiopathies of the kidney, such as fibrinoid necrosis of the small arteries, arterioles, and glomerular capillaries, and intimal proliferation in the small arteries were evident. As renal impairment is usually irreversible in MAHA by MMC, careful follow-up of renal function should be emphasized in patients receiving MMC.