Autoimmune hemolytic anemia associated with a hypernephroma

This report describes a case of warm-antibody-mediated hemolytic anemia associated with a hypernephroma. Only four patients with renal cell carcinoma and Coombs'-positive hemolytic anemia have been reported previously. Although rare, the occurrence of autoimmune hemolytic anemia in association with a hypernephroma should be considered one of the possible hematologic complications of this tumor.