title: Anaplastic solitary extramedullary plasmacytoma of the cecum. Report of a case confirmed by immunoperoxidase staining.
abstract: Solitary extramedullary plasma cell tumors, although uncommon, have been reported with increasing frequency over the last few years. Approximately 5 to 10 percent of the tumors arise in the gastrointestinal tract. This report demonstrates that a solitary anaplastic cecal extramedullary plasmacytoma can mimic a polypoid carcinoma, both grossly and, to an extent, microscopically. Immunoperoxidase stains for cytoplasmic immunoglobulin proved useful in establishing the correct diagnosis.
authors.affiliation: Department of Internal Medicine, Bronx Municipal Hospital Center, New York.
authors.forename: R I
authors.initials: RI
authors.lastname: Sperling
authors.forename: F B
authors.initials: FB
authors.lastname: Fromowitz
authors.forename: T J
authors.initials: TJ
authors.lastname: Castellano
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000175:diagnosis; D002430:Cecal Neoplasms / Q000175:diagnosis / Q000276:immunology / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D007124:Immunoenzyme Techniques; D007136:Immunoglobulins / Q000032:analysis; D008297:Male; D010954:Plasmacytoma / Q000175:diagnosis / Q000276:immunology / Q000473:pathology*
chemical_list: D007136:Immunoglobulins