Incidental finding of ileal gastrointestinal stromal tumour during prostate cancer staging with prostate-specific membrane antigen scan.

Prostate-specific membrane antigen (PSMA) positron emission tomography (PET)/computed tomography (CT) is used in managing and staging prostate cancer, but can identify other non-prostate pathology. We present the first reported case where small bowel gastrointestinal stromal tumour (GIST) has been incidentally identified on PSMA-PET scan and highlight the need for awareness of other pathology being identified on PSMA-PET/CT.