期刊
UROLOGIA INTERNATIONALIS
卷 107, 期 5, 页码 440-446出版社
KARGER
DOI: 10.1159/000521723
关键词
Adjuvant; Prostate cancer; Radiation cystitis; Radiotherapy; Salvage
This study aimed to evaluate the incidence and predictive factors of radiation cystitis following external beam radiation therapy for prostate cancer. The results showed that radiation therapy was the sole risk factor associated with the development of radiation cystitis.
Objectives: This study aimed to evaluate the cumulative incidence of overall and severe radiation cystitis following external beam radiation therapy for prostate cancer and investigate the clinical factors predictive of radiation cystitis. Methods: This retrospective study comprised 246 patients who received external beam radiation therapy for localized or locally advanced prostate cancer between 2013 and 2016 in our institution. Of these, 189 received primary radiation therapy and 57 received adjuvant/salvage radiation therapy. Radiation cystitis was recorded using the Common Terminology Criteria for Adverse Events version 5.0 definition, and severe radiation cystitis was defined as grade 3 or higher. All medical records were reviewed to calculate the cumulative incidence of radiation cystitis. Univariate and multivariate Cox regression analyses were used to evaluate its association with clinicopathologic features. Results: The median follow-up period after radiation therapy was 56 months (range 5-81). The 5-year cumulative incidence of radiation cystitis and severe radiation cystitis was 16.2% and 3.0%, respectively. Multivariate analyses identified radiation therapy in the adjuvant/salvage setting was the sole risk factor associated with the development of radiation cystitis (hazard ratio: 2.75, p = 0.02). Conclusions: Radiation therapy in the post-prostatectomy setting was associated with increased risk of radiation cystitis compared with radiotherapy as the primary treatment.
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