Multiple myeloma presenting as CEA-producing rectal cancer

Abstract

We report the case of a 57-year old patient with multiple myeloma, characterized by extramedullary involvement of the rectum at presentation. Malignant plasma cells were found to produce carcinoembryonic antigen (CEA), a tumor antigen more commonly associated with rectal adenocarcinomas.

Keywords

• Multiple myeloma
• extramedullary plasmacytoma
• CEA