Severe refractory autoimmune hemolytic anemia with both warm and cold autoantibodies that responded completely to a single cycle of rituximab: a case report.

Introduction Mixed warm and cold autoimmune hemolytic anemia runs a chronic course with severe intermittent exacerbations. Therapeutic options for the treatment of hemolysis associated with autoimmune hemolytic anemia are limited. There have been only two reported cases of the effective use of rituximab in the treatment of patients with mixed autoimmune hemolytic anemia. We report a case of severe mixed autoimmune hemolytic anemia that did not respond to steroids and responded to four weekly doses of rituximab (one cycle).