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.
Mimura
Rie
R
Department of Radiology, Hakodate City Hospital, Hakodate, Japan.
Kamishima
Tamotsu
T
Kubota
Kanako C
KC
Nakano
Fumihito
F
Yabe
Ichiro
I
Sasaki
Hidenao
H
Maruyama
Satoru
S
Shinohara
Nobuo
N
Harris
Ardene A
AA
Haga
Hironori
H
Shirato
Hiroki
H
Terae
Satoshi
S
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