Anaplastic solitary extramedullary plasmacytoma of the cecum. Report of a case confirmed by immunoperoxidase staining.
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.
Sperling
R I
RI
Department of Internal Medicine, Bronx Municipal Hospital Center, New York.
Fromowitz
F B
FB
Castellano
T J
TJ
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*
D007136:Immunoglobulins