Journal
PROSTATE CANCER AND PROSTATIC DISEASES
Volume 21, Issue 3, Pages 438-445Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41391-018-0054-9
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Backround: Recently metabolic syndrome has been associated to an increased risk of advanced disease. Aim of our study is to investigate the association of metabolic syndrome (MetS) with the risk of prostate cancer (PCa) upgrading and upstaging after radical prostatectomy (RP). Methods: From 2012 and 2016, 400 consecutive men underwent RP at three referral centers in Italy and were enrolled into a prospective database. Blood pressure, body mass index and waist circumference were measured before RP. Blood samples were also collected and tested for total PSA, fasting glucose, triglycerides and HDLs. Logistic regression analyses were used to assess the association between MetS, defined according to Adult Treatment Panel III, and the risk of upgrading and upstaging), using the new Prognostic Grade Group (PGG) classification system. Results: Overall 148/400 (37%) men were diagnosed with MetS and most of these reported up-grading (54.5%) and upstaging (56.8%). These events were significantly more common in this population and MetS was a risk factor for up-staging and up-grading on multivariable analysis. Patients with MetS presented worst accuracy (72 vs. 84%; p = 0.001) and worst kappa coefficient of agreement (k = 0.439 +/- 0.071 vs. k = 0.553 +/- 0.071) between needle biopsy and radical prostatectomy specimens when compared to patients without MetS. Conclusions: MetS represents a significant risk factor for upgrading and upstaging. Accuracy of PGG system on biopsy is poor in patients with MetS, therefore results should be evaluated carefully in this population.
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