title: Primary plasmacytomas of the colon.
abstract: Primary plasmacytomas of the colon are very rare. Six documented cases have been reported, and this article reports the seventh case. Plasmacytomas should be included in the differential diagnosis of a solitary tumor of the colon. They have a better prognosis than carcinomas and secondary plasmacytomas.
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D010954:Plasmacytoma / Q000473:pathology*; D011379:Prognosis