title: Solitary extramedullary plasmacytoma of the liver without systemic monoclonal gammopathy.
abstract: Extramedullary plasmacytoma of the liver is a very rare tumor. Although a few cases of extramedullary plasmacytoma of the liver have been reported, we could not find any report on truly localized extramedullary plasmacytoma of the liver in the literature. The patient was a 63-yr-old man who exhibited a solitary liver mass on dynamic computed tomography and magnetic resonance imaging. Histologically, the tumor was composed of mature plasma cells with mild atypia. Immunohistochemistry demonstrated monoclonal IgG and Kappa light chain expression. Bone marrow examination revealed no abnormalities. There was no evidence of a monoclonal protein in the serum and urine, lytic bone lesions, anemia, renal insufficiency, and hypercalcemia. The patient was treated with 5,000 cGy of radiotherapy, and the tumor disappeared 6 months after treatment.
authors.affiliation: Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea.
authors.forename: Jun Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Jong Ho
authors.initials: JH
authors.lastname: Won
authors.forename: Hyun Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: Sang Byung
authors.initials: SB
authors.lastname: Bae
authors.forename: Chan Kyu
authors.initials: CK
authors.lastname: Kim
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Nam Su
authors.initials: NS
authors.lastname: Lee
authors.forename: Kyu Taeg
authors.initials: KT
authors.lastname: Lee
authors.forename: Sung Kyu
authors.initials: SK
authors.lastname: Park
authors.forename: So Young
authors.initials: SY
authors.lastname: Jin
authors.forename: Dae Sik
authors.initials: DS
authors.lastname: Hong
authors.forename: Hee Sook
authors.initials: HS
authors.lastname: Park
mesh_terms: D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007145:Immunoglobulin kappa-Chains / Q000032:analysis; D007150:Immunohistochemistry; D008113:Liver Neoplasms / Q000276:immunology / Q000473:pathology* / Q000532:radiotherapy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D008998:Monoclonal Gammopathy of Undetermined Significance / Q000276:immunology / Q000473:pathology; D010954:Plasmacytoma / Q000276:immunology / Q000473:pathology* / Q000532:radiotherapy; D014057:Tomography, X-Ray Computed
chemical_list: D007074:Immunoglobulin G; D007145:Immunoglobulin kappa-Chains