Early detection of bone marrow involvement in extramedullary plasmacytoma by whole-body F-18 FDG positron emission tomography.
The utility of positron emission tomography (PET) with the glucose analog 2-deoxy-2-[F-18] fluoro-D-glucose (F-18 FDG) in plasmacytoma has not been well evaluated. The authors report a case of extramedullary plasmacytoma (EMP) in which whole-body F-18 FDG PET was useful in the early detection of bone marrow involvement. A 34-year-old woman had EMP without histologic or radiologic evidence of bone lesions. However, the early phase of bone marrow involvement was considered because of spotty accumulation shown by F-18 FDG PET. A follow-up F-18 FDG PET study after radiotherapy showed intense multifocal accumulation in the bone marrow, which was confirmed on bone marrow aspiration as abnormal proliferation of plasma cells. Whole-body F-18 FDG PET has the potential to detect the early phase of bone marrow involvement in patients with EMP.
Kato
T
T
Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
Tsukamoto
E
E
Nishioka
T
T
Yamazaki
A
A
Shirato
H
H
Kobayashi
S
S
Asaka
M
M
Imamura
M
M
Tamaki
N
N
D000328:Adult; D001853:Bone Marrow / Q000000981:diagnostic imaging*; D019046:Bone Marrow Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging; D010954:Plasmacytoma / Q000000981:diagnostic imaging*; D019275:Radiopharmaceuticals; D014055:Tomography, Emission-Computed
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18