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ADR Yönetimi

THE PENILE BULB RADIATION DOSE EFFECT ON URINARY INCONTINENCE IN PROSTATE CANCER PATIENTS

ŞEFİKA DINÇER, MÜGE AKMANSU, MUHAMMET ERTUĞRUL ŞENTÜRK

Turkish Journal of Oncology - 2024;39(3):274-278

Department of Radiation Oncology, Gazi University Faculty of Medicine, Ankara-Türkiye

 

OBJECTIVE This is the first study to determine whether there is a relationship between penile bulb radiation dose and urinary incontinence. METHODS This study comprises 131 patients with localized, locally advanced, and pelvic oligometastatic prostate cancer treated at our institution. All patients were treated with IMRT between February 2016 and August 2020. Urinary incontinence after the treatment was assessed retrospectively using a standardized follow-up program based on data available at our center. The urinary incontinence was scored using the CTCAE version 5.0 scoring system. In univariate analysis, the Mann-Whitney test was used to detect any association between penile bulb V50 doses and membranous urethral length on urinary incontinence. RESULTS Urinary incontinence after the treatment was reported in 17 of 131 patients. The average penile bulb V50 values of patients with incontinence were 28.66 gy and 26.8 in patients who did not have urinary incontinence. The mean membranous urethral length was 3.01cm in patients with incontinence and 3.34cm in patients without incontinence. Although these parameters have minimal difference in patients with and without incontinence, they are not statistically significant (p>0.05 all). CONCLUSION Radiation-induced urinary incontinence was not associated with the radiation dose of the penile bulb and membranous urethral length. However, further studies are essential.