Reticulum cell sarcoma of the cecum and macroglobulinemia: a case report.

A case report is presented of an 81-yr old male who developed a reticulum cell sarcoma of the cecum while on immunosuppressive therapy for 13 yr for a primary diagnosis of macroglobulinemia. The considerable overlap between immunoproliferative disorders and the increased incidence of malignancies in patients receiving immunosuppressive therapy are discussed.