Port site metastasis after robotic assisted laparoscopic radical prostatectomy: Diagnosis via prostate-specific membrane antigen (PSMA)-targeted 18F-DCFPyL PET/CT

Abstract

We present a case of port site metastasis (PSM) that was identified in an 82-year-old man with an elevated prostate-specific antigen (PSA) to 3.9 ng/mL, concerning for biochemical recurrence after robotic-assisted radical prostatectomy, adjuvant radiation, and six months of androgen deprivation therapy with an undetectable PSA post-treatment over 10 years ago. A 2.1 cm solitary tracer avid nodule on the right lateral abdominal wall with no other evidence of recurrence or metastatic disease was found on prostate-specific membrane antigen (PSMA)–targeted ¹⁸F-DCFPyL PET/CT scan. The patient underwent local excision of this metastatic lesion, and final pathology revealed metastatic prostatic adenocarcinoma.