Meningioma: A false positive finding of metastasis from prostate adenocarcinoma using 68Ga-PSMA PET/CT scan

Atena  Aghaei; Kamran  Aryana; Roham Salek; Seyed Rasoul   Zakavi; Hojjat  Ahmadzadefar

doi:10.18502/irjnm.v27i1.975

Atena Aghaei
Kamran Aryana
Roham Salek
Seyed Rasoul Zakavi
Hojjat Ahmadzadefar

DOI: https://doi.org/10.18502/irjnm.v27i1.975

Keywords: Meningioma; 68Ga-PSMA; Prostate cancer; Bone scan

Abstract

A 73-year-old man with history of prostatic adenocarcinoma radical prostatectomy underwent 99mTc-MDP whole-body bone scan and subsequent 68Ga-labeled prostate-specific membrane antigen (PSMA) ligand PET/CT for restaging due to a gradual rise of prostate-specific antigen levels. Whole-body bone scan showed two focal zones of slightly increased uptake in the right fronto-parietal and temporal bones. 68Ga-PSMA PET/CT scan showed local recurrence in the prostatic bed and two foci of slightly increased uptake in the right temporal and fronto-parietal lobes. A brain CT scan, with IV contrast confirmed that foci of increased uptake in the temporal and parietal lobes were consistent with typical meningioma.