Related Experiment Video
Updated: Jun 5, 2026

12:10
Retzius-Sparing Robot-Assisted Radical Prostatectomy
Published on: May 19, 2022
[COMBINED SURGERY FOR RECTAL CANCER WITH PROSTATIC INVASION : A CASE REPORT].
Takaaki Takuma1, Syuma Genjo1, Hitoshi Yokozeki1
1The Department of Urology, Toyooka Hospital.
Hinyokika Kiyo. Acta Urologica Japonica
|June 4, 2026
Summary
This case study highlights a novel surgical approach for advanced rectal cancer invading the prostate. Combining robotic abdominoperineal resection with retzius-sparing robot-assisted radical prostatectomy achieved curative resection and preserved urinary continence.
Area of Science:
- Oncology
- Urology
- Surgical Innovation
Background:
- Locally advanced rectal cancer with prostate invasion presents complex surgical challenges.
- Traditional surgical approaches carry significant risks of vesicourethral leakage and incontinence due to prostate and seminal vesicle resection.
Purpose of the Study:
- To evaluate the feasibility and outcomes of combining robotic abdominoperineal resection (APR) with retzius-sparing robot-assisted radical prostatectomy (RS-RARP) for rectal cancer invading the prostate.
- To assess the oncologic and functional results, particularly urinary continence and surgical margins.
Main Methods:
- A 58-year-old male patient with locally advanced rectal cancer invading the prostate underwent combined robotic surgery.
- Procedures included robotic abdominoperineal resection and retzius-sparing robot-assisted radical prostatectomy.
- Postoperative assessment included cystography and evaluation for urinary incontinence.
Main Results:
- The patient experienced an uneventful postoperative course with no vesicourethral anastomotic leakage or urinary incontinence.
- Pathological findings confirmed prostate invasion with negative surgical margins.
- No recurrence was observed at one-year follow-up after adjuvant chemotherapy.
Conclusions:
- Retzius-sparing robot-assisted radical prostatectomy combined with abdominoperineal resection is a feasible surgical option for selected patients with rectal cancer invading the prostate.
- This combined approach may offer a balance between achieving curative oncologic resection and preserving functional outcomes, including urinary continence.
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