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Year : 2019  |  Volume : 30  |  Issue : 6  |  Page : 255-261

Smaller Prostate Volume is Associated with Adverse Pathological Features and Biochemical Recurrence after Radical Prostatectomy

Department of Urology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA

Correspondence Address:
Dr. Pranav Sharma
Department of Urology, Texas Tech University Health Sciences Center, 3601 4th Street Stop 7260, Lubbock, Texas 79430
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/UROS.UROS_28_19

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Introduction: The relationship between prostate cancer (PCa) and benign prostatic hyperplasia is unclear. Reduction in androgenicity and lower intraprostatic growth factor concentrations in smaller prostates may serve a more ideal environment for the development of aggressive tumors. We determined if prostate volume was associated with adverse pathological features, tumor volume, and biochemical recurrence (BCR) in men undergoing radical prostatectomy (RP) for PCa. Materials and Methods: We retrospectively identified 192 men who underwent RP at our institution for PCa from 2010 to 2016 years. Prostate volume was based on RP specimen weight, and cumulative tumor volume was calculated. Means were compared with one-way ANOVA test and proportions with Chi-square analysis. Multivariate logistic regression was performed to determine independent predictors of BCR after RP. Results: Patients with prostate volume >60 g were less likely to have high-risk PCa (Gleason grade group >4) (7.1% vs. 13.4%; P = 0.042), node-positive disease (7.1% vs. 13.4%, P = 0.042), and BCR (10.7% vs. 25.0%, P = 0.002) after surgery. Linear regression showed an inverse relationship between prostate and tumor volume (R = 0.267; P < 0.05). On multivariate logistic regression, prostate volume >30 g (odds ratio [OR]: 0.21, 95% confidence interval [CI]: 0.09–0.88; P = 0.015) and >60 g (OR: 0.14, 95% CI: 0.03–0.74; P = 0.002) were independent predictors of reduced BCR at mean follow-up of 24 months.Conclusions: Smaller prostate volume was associated with adverse pathological features, increased tumor volume, higher incidence of pathological node-positive disease, and increased rates of BCR. Prostate volume should be considered as a prognostic feature when counseling patients with both elevated prostate-specific antigen and newly diagnosed PCa.

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