Bone Infarction Mimicking a Bone Metastasis on 18F-Prostate-Specific Membrane Antigen PET/CT.

F-prostate-specific membrane antigen (PSMA) PET/CT imaging is increasingly used in staging, assessment of biochemical recurrence, and treatment response in men with prostate cancer. We present a case report of a 70-year-old man who underwent F-PSMA PET/CT imaging to investigate biochemical recurrence following radical prostatectomy for prostate adenocarcinoma. New focal moderate PSMA uptake was identified in the left femur. A previous PSMA study, performed 5 months earlier, was normal. A subsequent MRI scan demonstrated that the PSMA avidity corresponded to a new femoral bone infarct. An English literature search revealed no previous cases of PSMA tracer uptake in bone infarction.

Clinical nuclear medicine. 2020 Dec 14 [Epub ahead of print]

Sherif Elsobky, Malavika Nathan, Nicola Robertson, Thomas Wagner

From the Departments of Nuclear Medicine., Radiology, Royal Free London Hospital, London, United Kingdom.