False-positive18F-fluorodeoxyglucose positron emission tomography/computed tomography in a patient with metallic implants following chondrosarcoma resection.
Positron emission tomography (PET) with fluorine-18-labeled fluorodeoxyglucose (18F-FDG) has been used for the staging and evaluation of recurrence in cancer patients. We herein report a false-positive result of18F-FDG PET/computed tomography (CT) scan in a patient following chondrosarcoma resection and metallic implanting. A 35-year-old male patient with chondrosarcoma of the left iliac bone underwent radical resection, metal brace implanting and radiotherapy. A high uptake of18F-FDG was observed in the metallic implants and adjacent tissue during PET/CT scanning in the 5th year of follow-up. Tissue biopsy and follow-up examination identified no tumor recurrence or infection at these sites, suggesting that the results of18F-FDG PET/CT must be interpreted with caution in cancer patients with metallic implants.
Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China.
P U
PU
Zhou
Department of Radiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China.
Jinliang
J
Tang
Department of Pathology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China.
Dong
D
Zhang
Institute for Cancer Research in People's Liberation Army, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China.
Guanghui
G
Li
18F-fluorodeoxyglucose positron emission tomography/computed tomography; chondrosarcoma; metallic implant; recurrence