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Renal cell carcinoma and autoimmune hemolytic anemia.

A previously healthy man who became bedridden because of malaise, fatigue, and weakness was found to have an autoimmune hemolytic anemia (AIHA). In the course of his evaluation for the AIHA, he was found, coincidentally, to have a renal cell carcinoma. The AIHA was marginally responsive to therapy with corticosteroids, but it resolved promptly after excision of the cancer. This case represents probably a rarely observed association between a nonhematologic malignancy and autoimmune hemolytic anemia.