title: Spontaneous regression of extramedullary plasmacytoma--a case report.
abstract: A case of extramedullary plasmacytoma in the soft tissues of the posterior chest wall of an 80-year old man is reported herein. Immunofluorescence study showed that the tumor cells produced IgG lambda. An M-component was also detected in the patient's serum by paper electrophoresis. Two months following the open biopsy done to establish diagnosis, the tumor underwent spontaneous regression and the M-component in the serum also disappeared. This is the first case report of spontaneous regression of an extramedullary plasmacytoma and the probable reasons for this spontaneous regression are discussed herein.
authors.affiliation: Department of Surgery, All India Institute of Medical Sciences, New Delhi.
authors.lastname: Arunabh
authors.forename: S
authors.initials: S
authors.lastname: Dutta Gupta
authors.forename: S
authors.initials: S
authors.lastname: Bal
authors.forename: A K
authors.initials: AK
authors.lastname: Sarda
authors.forename: M
authors.initials: M
authors.lastname: Vijayraghavan
authors.forename: N K
authors.initials: NK
authors.lastname: Shukla
authors.forename: M M
authors.initials: MM
authors.lastname: Kapur
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001415:Back; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D008297:Male; D009365:Neoplasm Regression, Spontaneous; D010954:Plasmacytoma / Q000276:immunology / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000276:immunology / Q000473:pathology
chemical_list: D007074:Immunoglobulin G