Extramedullary plasmacytoma involving perirenal space accompanied by extramedullary hematopoiesis and amyloid deposition.
A 62-year-old man was referred to us after unsuccessful treatment of bilateral weakness in his upper and lower extremities with paresthesia in both lower extremities. Computed tomography (CT) revealed soft tissue masses in the left kidney along the capsule and paraaortic region that were of relatively low attenuation with accompanying granular calcifications. Pathological diagnosis of the biopsy specimen was extramedullary plasmacytoma accompanied by extramedullary hematopoiesis and amyloid deposition. Although the CT findings correlated well with the pathological results, the case was extremely atypical for extramedullary plasmacytoma in respect to location and the accompaniment with extramedullary hematopoiesis.
Department of Radiology, Hakodate City Hospital, Hakodate, Japan.
Rie
R
Mimura
Tamotsu
T
Kamishima
Kanako C
KC
Kubota
Fumihito
F
Nakano
Ichiro
I
Yabe
Hidenao
H
Sasaki
Satoru
S
Maruyama
Nobuo
N
Shinohara
Ardene A
AA
Harris
Hironori
H
Haga
Hiroki
H
Shirato
Satoshi
S
Terae
D000686:Amyloidosis / Q000150:complications* / Q000000981:diagnostic imaging; D001706:Biopsy; D003937:Diagnosis, Differential; D006411:Hematopoiesis, Extramedullary; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D007680:Kidney Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010954:Plasmacytoma / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed
D007074:Immunoglobulin G