PLASMACYTOMA OF THE SIGMOID COLON ASSOCIATED WITH A DIVERTICULAR STRICTURE - CASE-REPORT AND REVIEW OF THE LITERATURE

Plasmacytoma is a malignant tumour composed of plasma cells, Most comm only this takes the form of a plasma cell infiltration of bone marrow- multiple myeloma. This map be seen radiologically as either discrete l ytic lesions or diffuse osteoporosis. Plasma cells are seen on bone ma rrow biopsy, and monoclonal immunoglobulins may occur in plasma and/or urine.(1) Less frequently, plasma cell tumours may present as a solit ary myeloma of bone, which often progresses to multiple myeloma, or as a plasma cell leukaemia. Primary plasma cell tumours in an extramedul lary site are relatively rare.(2) Such soft tissue plasmacytomas usual ly occur in the nasopharynx or conjectiva, and are seldom located in t he lower gastrointestinal tract.(3) We report a case of primary plasma cytoma associated with a diverticular stricture in the sigmoid colon, an occurrence not previously documented, and review the current litera ture.