4.6 Article

Gleason Grade 1 Prostate Cancer Volume at Biopsy Is Associated With Upgrading but Not Adverse Pathology or Recurrence After Radical Prostatectomy: Results From a Large Institutional Cohort

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JOURNAL OF UROLOGY
卷 209, 期 1, 页码 198-206

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LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/JU.0000000000002956

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prostatectomy; prostatic neoplasms; watchful waiting

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This study aimed to investigate the association between low-grade prostate cancer volume and outcomes in men who underwent primary radical prostatectomy. The results showed that tumor volume was associated with upgrading at radical prostatectomy, but not with adverse pathology or recurrence.
Purpose:Clinical guidelines suggest that for low-grade, clinically localized prostate cancer, patients with higher volume of disease at diagnosis may benefit from definitive therapy, although the data remain unclear. Our objective was to determine associations between low-grade prostate cancer volume and outcomes in men managed with primary radical prostatectomy.Materials and Methods:Men with cT1-2N0/xM0/x prostate cancer, prostate specific antigen at diagnosis <10 ng/mL, and Gleason grade group 1 pathology on diagnostic biopsy managed with primary radical prostatectomy were included. Outcomes were pathological upgrade at radical prostatectomy (>= Gleason grade group 2), University of California, San Francisco adverse pathology at radical prostatectomy (>= Gleason grade group 3, pT3/4, or pN1), alternate adverse pathology at radical prostatectomy (>= Gleason grade group 3, >= pT3b, or pN1), and recurrence (biochemical failure with 2 prostate specific antigen >= 0.2 ng/mL or salvage treatment). Multivariable logistic regression models were used to estimate associations between percentage of positive cores and risk of upgrade and adverse pathology at radical prostatectomy. Multivariable Cox proportional hazards regression models were used to estimate associations between percentage of positive cores and hazard of recurrence after radical prostatectomy.Results:A total of 1,029 men met inclusion criteria. Multivariable logistic regression models demonstrated significant associations between percentage of positive cores and pathological upgrade (OR 1.31, 95% CI 1.1-1.57, P < .01), but not University of California, San Francisco adverse pathology at radical prostatectomy (P = .84); percentage of positive cores was negatively associated with alternate adverse pathology (OR 0.67, 95% CI 0.48-0.93, P = .02). Multivariable Cox regression models demonstrated no association between percentage of positive cores and hazard of recurrence after radical prostatectomy (P = .11).Conclusions:In men with Gleason grade group 1 prostate cancer, tumor volume may be associated with upgrading at radical prostatectomy, but not more clinically significant outcomes of adverse pathology or recurrence.

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