30 Extramedullary Plasmacytoma

Clinical Presentation

A 75-year-old man with a history of multiple myeloma presents with abdominal pain.

Fig. 30.1 (A,B) Axial contrast-enhanced CT image of the abdomen shows a round, well-defined mass in the pancreatic head and body (arrow) extending to the third portion of the duodenum. The splenic vein is encased by the pancreatic mass and can be appreciated only in its proximal part.

Radiologic Findings

Contrast-enhanced computed tomography (CT) images of the pancreas (Fig. 30.1) show a large mass centered in the pancreas and causing extrinsic compression of the duodenum; the splenic vein appears to be obliterated in the region of the mass. The tail of the pancreas is spared and shows no atrophy or pancreatic duct dilatation.