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Background: Hospital volume is considered to be a quality measure for outcomes after major oncological surgery. However, countrywide data are lacking for radical prostatectomy (RP)., Objective: To assess the impact of hospital volume on postoperative outcomes after RP performed using an open (ORP) versus a minimally invasive surgery (MIS, including pure and robot-assisted RP) approach., Design, Setting, and Participants: Data for patients undergoing RP in France from 2014 to 2019 were extracted from the central database of the national health care system., Outcome Measurements and Statistical Analysis: Primary endpoints were length of hospital stay (LOS), complications (measured as severity index [SI] scores), and hospital readmission rates at 30 and 90 d., Results and Limitations: The median annual hospital volume was 19 RPs (interquartile range 1-40) in the overall cohort. MIS was associated with better outcomes than ORP. Greater hospital volume was correlated with shorter LOS (p < 0.001), high SI scores (SI3: p < 0.001; SI4: p < 0.001), and 30-d (p < 0.001) and 90-d readmission rates (p < 0.001). Incidence rates for SI3 and SI4 scores, and 30-d and 90-d readmission were 12.8 %, 5.8 %, 29.8 %, and 35.4 % in very low-volume centres (<10 annual cases) compared with 8.1 %, 1.9 %, 18.1 %, and 23.9 %, respectively, in other centres (all p < 0.001). Hospital volume was an independent risk factor for all outcomes after taking into account age, lymph node dissection, year of surgery, and surgical approach (ORP vs MIS). The main limitation is the lack of post-RP oncological and functional data., Conclusions: This nationwide analysis of RP procedures shows a significant correlation between hospital volume and postoperative outcomes irrespective of the surgical approach. Very low case volume (<10 annual procedures per centre) is associated with the highest risk of complications, readmission, and prolonged LOS. Greater hospital volume is directly correlated with shorter LOS even beyond this threshold., Patient Summary: In this study we analysed the French nationwide database for removal of the prostate for prostate cancer. We found that the number of these cases that a hospital carries out per year was associated with outcomes after surgery, with better outcomes for higher annual case numbers., (Copyright © 2021 European Association of Urology. Published by Elsevier B.V. All rights reserved.)

Background: Prostate cancer (PCa) is more frequent and more aggressive in populations of African descent than in Caucasians. Since the fatty acid composition of peri-prostatic adipose tissue (PPAT) has been shown to differ according to the ethno-geographic origin and is involved in PCa aggressiveness, we aimed to analyze the cholesterol content of PPAT from Caucasian and African-Caribbean patients, in correlation with markers of disease aggressiveness and cholesterol metabolism in cancer tissues., Methods: The quantification of cholesterol in PPAT was analyzed in 52 Caucasian and 52 African-Caribbean PCa patients, with in each group 26 indolent tumors (ISUP Group1 and pT2) and 26 potentially aggressive tumors (ISUP Group 3-5 and/or pT3). The expression of proteins involved in cholesterol metabolism was analyzed by immunohistochemistry on cancer tissue samples included in tissue microarrays., Results: The amount of cholesterol esters was lower in PPAT from African-Caribbean patients compared with Caucasians, without any correlation with markers of disease aggressiveness. In cancer tissues from African-Caribbean patients, the expression of ABCA1 (involved in cholesterol efflux) was decreased, and that of SREBP-2 (involved in cholesterol uptake) was increased. In both groups of patients, SREBP-2 expression was strongly associated with that of Zeb1, a key player in the epithelial-to-mesenchymal transition (EMT) process., Conclusion: These results suggest that cholesterol metabolism differs according to the ethno-geographic origin, in both PPAT and cancer tissues. In African-Caribbeans, the orientation towards accumulation of cholesterol in cancer cells is associated with a more frequent state of EMT, which may promote PCa aggressiveness in this population., (© 2021 Wiley Periodicals LLC.)