{Reference Type}: Case Reports {Title}: PSMA-Avid Desmoid Tumor of the Abdominal Wall on 18 F-Piflufolastat PET/CT. {Author}: Bommekal S;Flynt L;Tewari SO;Surasi DSS; {Journal}: Clin Nucl Med {Volume}: 49 {Issue}: 7 {Year}: 2024 Jul 1 {Factor}: 10.782 {DOI}: 10.1097/RLU.0000000000005269 {Abstract}: UNASSIGNED: Prostate-specific membrane antigen (PSMA) PET/CT is widely used in the evaluation of suspected metastasis for initial definitive therapy and suspected recurrence of prostate cancer. We outline a case report of a 62-year-old man with history of prostate cancer treated with surgery, salvage radiation, and hormonal therapy presenting with rising PSA levels. There was incidental detection of a PSMA-avid subcutaneous abdominal wall mass on PSMA PET/CT study, which was consistent with desmoid fibromatosis on an ultrasound-guided biopsy.