Outcomes for prostate glands >60 cc treated with low-dose-rate brachytherapy

Brachytherapy
Yvonne D PhamRahul D Tendulkar

Abstract

We sought to analyze whether outcomes of biochemical relapse-free survival (bRFS), late genitourinary (GU), and late gastrointestinal toxicity are different for prostate cancer patients with small (≤60 cc) vs. large (>60 cc) prostates following low dose-rate brachytherapy. The bRFS outcomes for 2076 low- or intermediate-risk prostate cancer patients from 1996 to 2012 were determined from a review of a prospectively maintained database. All patients were treated with (125)I monotherapy without androgen deprivation therapy. Biochemical failure was defined per the Phoenix definition. Patient-related factors and dosimetric values were examined in Cox regression analyses for bRFS and late toxicity. Late toxicity was scored according to a modified Common Terminology Criteria for Adverse Events version 4.0 scale. The median followup for all patients was 55 months. The 5-year bRFS rates for all patients, prostates >60 cc, and prostates ≤60 cc were 93.4% (95% confidence interval [CI]: 92.1%, 94.7%), 96.7% (95% CI: 94.4%, 98.9%), and 92.9% (95% CI: 91.4%, 94.3%), respectively. On multivariable analysis, prostate size >60 cc was significantly associated with improved bRFS (p = 0.01), as were initial prostate-specific antigen and biopsy Gl...Continue Reading

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Citations

May 5, 2018·BJU International·Nelson N StoneRichard G Stock

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