Incidental prostate carcinoma after single-port robot-assisted simple prostatectomy: a multi-institutional report (SPARC).

Background: Single-port robot-assisted simple prostatectomy is a minimally invasive alternative for patients with large benign prostatic hyperplasia with severe symptoms and/or failure of medical treatment. In recent literature, the rate of incidental prostate cancer after simple prostatectomy ranges from 1.8% to 13.0%. Our objective is to report the rate of incidental prostate cancer after single-port robot-assisted simple prostatectomy and to compare our findings to other approaches.

Methods: A Single-Port Advanced Research Consortium [SPARC] multi-institutional retrospective analysis of all initial consecutive single-port robot-assisted simple prostatectomy cases performed from 2019 to 2023 by eleven surgeons from six centers. Our primary outcome was the rate of incidental prostate cancer in adenoma specimens. We used descriptive statistics to analyze the data.

Results: A total of 235 cases were performed successfully without conversions or additional ports. Eleven patients (4.6%) were found to have incidental prostate cancer on pathological analysis. The median percentage of tissue involved by the tumor was 5%. The overall rate of clinically significant prostate cancer was 2.1%. Most cases were Gleason Grade Group 1 (55%). Those with Grade Group ≤3 were subsequently managed with active surveillance with a median follow-up of 17 months. A patient with Gleason Grade Group 4 underwent an uncomplicated multi-port robot-assisted radical prostatectomy with satisfactory functional and oncological outcomes.

Conclusions: Initial multi-institutional experience with single-port robot-assisted simple prostatectomy showed an incidental prostate cancer rate of 4.6%, comparable to MP, laparoscopic, and open techniques.