ENCOUNTERING ‘DROPPED’ GALLSTONES DURING ROBOTIC ASSISTED LAPAROSCOPIC RADICAL PROSTATECTOMY

Abstract

We describe a case of an unusual finding during robotic-assisted laparoscopic radical prostatectomy and bilateral pelvic lymphadenectomy in a 66-year-old male with Stage IIb (T2c, N0, M0) prostate adenocarcinoma. During the operation, intraperitoneal examination of the rectovesical pouch revealed calcifications and stones which were subsequently identified as gallstones. While these stones were not noted initially on this patient’s preoperative multiparametric MRI (mpMRI), a retrospective review demonstrated hypointense foci in the rectovesical pouch. Here, we describe the first reported case of visualization of dropped gallstones on a prostate mpMRI and retrieval during robotic prostatectomy.