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Updated: Jun 24, 2025

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Retzius-Sparing Robot-Assisted Radical Prostatectomy
Published on: May 19, 2022
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Preoperative high serum total testosterone levels predict preserved postoperative sexual function in patients after
Kohei Saito1,2, Yuki Kohada1, Keisuke Hieda1
1Department of Urology, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.
Summary
Preoperative total testosterone levels impact sexual function preservation after nerve-sparing robot-assisted radical prostatectomy. High testosterone patients maintained sexual function and had better recurrence-free survival.
Area of Science:
- Urology
- Oncology
- Endocrinology
Background:
- Robot-assisted radical prostatectomy (RARP) is a standard treatment for prostate cancer.
- Preoperative hormonal status, specifically total testosterone levels, may influence outcomes after RARP.
- Understanding these associations can optimize patient selection and surgical strategy.
Purpose of the Study:
- To investigate the relationship between preoperative total testosterone levels and postoperative sexual function.
- To assess the impact of preoperative total testosterone on oncological prognosis after RARP.
- To evaluate the efficacy of nerve-sparing procedures in relation to testosterone levels.
Main Methods:
- A cohort of 233 patients undergoing RARP was analyzed.
- Patients were stratified into low (<3.0 ng/mL) and high (≥3.0 ng/mL) preoperative total testosterone groups.
- Sexual function was assessed using validated questionnaires and potency rates; oncological outcomes by biochemical recurrence.
Main Results:
- No significant difference in overall sexual function was observed between high and low testosterone groups.
- In nerve-sparing RARP cases, significant sexual function preservation was noted exclusively in the high testosterone group.
- The high testosterone group demonstrated superior biochemical recurrence-free survival (p=0.008).
Conclusions:
- High preoperative total testosterone is associated with preserved sexual function following nerve-sparing RARP.
- Patients with high testosterone levels exhibit better oncological outcomes post-RARP.
- Nerve-sparing interventions may be particularly beneficial for patients with high total testosterone.

