OBJECTIVE: To report the relative incidence of the perceived reduction in penile size across prostate cancer treatment modalities and to describe its effect on quality of life and treatment regret. MATERIALS AND METHODS: The incidence of patient complaints about reduced penile size was calculated for 948 men in the Comprehensive, Observational, Multicenter, Prostate Adenocarcinoma (COMPARE) registry who experienced biochemical failure (per registry definition) and were assessed a median of 5.53 years after prostatectomy or radiotherapy (RT) consisting of either external beam RT or brachytherapy, with or without androgen deprivation therapy (ADT). Multivariate logistic regression analysis was used to determine the factors associated with treatment regret and interference with emotional relationships. RESULTS: Of 948 men, 25 (2.63%) complained of a reduced penile size. The incidence of reduced penile size stratified by treatment was 3.73% for surgery (19 of 510), 2.67% for RT plus ADT (6 of 225), and 0% for RT without ADT (0 of 213). The surgery (P=.004) and RT plus ADT (P=.016) groups had significantly more shortened penis complaints than the RT alone group. The rate of a shortened penis after surgery and after RT plus ADT was similar (P=.47). On multivariate analysis adjusting for age, treatment type, and baseline comorbidity, a perceived reduction in penile size was associated with interference with close emotional relationships (odds ratio 2.36, 95% confidence interval 1.02-8.26; P=.04) and increased treatment regret (odds ratio 3.37, 95% confidence interval 1.37-8.26; P=.0079). CONCLUSION: Complaints about a reduced penile size were more common with RT plus ADT or surgery than RT alone and were associated with greater interference with close emotional relationships and increased treatment regret. Physicians should discuss the possibility of this rarely mentioned side effect with their patients to help them make more informed treatment choices.
OBJECTIVE: To report the relative incidence of the perceived reduction in penile size across prostate cancer treatment modalities and to describe its effect on quality of life and treatment regret. MATERIALS AND METHODS: The incidence of patient complaints about reduced penile size was calculated for 948 men in the Comprehensive, Observational, Multicenter, Prostate Adenocarcinoma (COMPARE) registry who experienced biochemical failure (per registry definition) and were assessed a median of 5.53 years after prostatectomy or radiotherapy (RT) consisting of either external beam RT or brachytherapy, with or without androgen deprivation therapy (ADT). Multivariate logistic regression analysis was used to determine the factors associated with treatment regret and interference with emotional relationships. RESULTS: Of 948 men, 25 (2.63%) complained of a reduced penile size. The incidence of reduced penile size stratified by treatment was 3.73% for surgery (19 of 510), 2.67% for RT plus ADT (6 of 225), and 0% for RT without ADT (0 of 213). The surgery (P=.004) and RT plus ADT (P=.016) groups had significantly more shortened penis complaints than the RT alone group. The rate of a shortened penis after surgery and after RT plus ADT was similar (P=.47). On multivariate analysis adjusting for age, treatment type, and baseline comorbidity, a perceived reduction in penile size was associated with interference with close emotional relationships (odds ratio 2.36, 95% confidence interval 1.02-8.26; P=.04) and increased treatment regret (odds ratio 3.37, 95% confidence interval 1.37-8.26; P=.0079). CONCLUSION: Complaints about a reduced penile size were more common with RT plus ADT or surgery than RT alone and were associated with greater interference with close emotional relationships and increased treatment regret. Physicians should discuss the possibility of this rarely mentioned side effect with their patients to help them make more informed treatment choices.
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