Risk of erectile dysfunction after modern radiotherapy for intact prostate cancer

Area of Science:

• Oncology
• Radiation Oncology
• Urology

Background:

• Erectile dysfunction (ED) is a frequent adverse effect following prostate cancer treatment.
• Hypothesis: Modern radiotherapy (RT) techniques may reduce ED rates compared to historical data.
• Focus on evaluating contemporary external beam RT and brachytherapy for RT-induced ED.

Purpose of the Study:

• To assess the incidence of ED after modern prostate radiation therapy.
• To compare ED rates across different RT modalities including external beam and brachytherapy.
• To identify factors influencing ED post-treatment.

Main Methods:

• Systematic literature review (2002-2018) of patient-reported ED rates post-prostate RT.
• Included studies on external beam radiotherapy, stereotactic radiotherapy, and brachytherapy.
• Analyzed radiation dose, treatment strategy, and follow-up duration.

Main Results:

• 24 studies with 2714 patients met inclusion criteria.
• ED incidence was consistently high across all evaluated RT techniques.
• Median increase in ED was 17% (3DCRT), 26% (IMRT), 23% (LDR BT), and 23% (SBRT) at 2 years.

Conclusions:

• Erectile dysfunction is a common outcome of prostate radiation therapy.
• Modern external beam RT and brachytherapy techniques demonstrate similar ED risks.
• Advanced techniques like penile-bulb sparing do not appear to significantly alter ED rates.