title: Duodenal plasmacytoma. A rare primary extramedullary localization simulating a carcinoma.
abstract: A patient with duodenal plasmacytoma is described. The extramedullary localization preceded the complete humoural picture of multiple myeloma by 15 months. The previously reported cases of myeloma of primary gastrointestinal localization are reviewed.
mesh_terms: D000368:Aged; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004386:Duodenum / Q000473:pathology; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D009101:Multiple Myeloma / Q000175:diagnosis; D010954:Plasmacytoma / Q000175:diagnosis* / Q000473:pathology