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Our study validated in a group of patients with PCa the novel risk stratification tool proposed by Briganti, which presented a higher accuracy for baseline staging bone scan when compared with the EAU guideline. In our experience, this approach would further reduce (about 60 %) the use of staging baseline bone scan without compromising the ability to detect BMs in patients with PCa.

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Background An increase of the frequency of uric acid urinary stones compared to calcium-containing ones has been recently described. This study was aimed at assessing the frequency of different types of urinary stones in the population of northern Italy in the period 2016–18 compared to 2001–2003. Methods Analyses by infrared spectroscopy of 1007 stones endoscopically removed at two institutions in the area of Milan (Northern Italy) were retrospectively considered. Stones were classified as calcium oxalate monohydrate (COM) and dihydrate (COD), mixed uric acid/calcium oxalate (UC); uric acid (UA), struvite (ST); apatite (CAP); mixed calcium oxalate / apatite (CAPOX); others. The patients were divided into two groups: 2001–2003 and 2016–2018. The average temperature values of the region over the two time periods were obtained by the national statistical institute. Results The average age of the 2001–2003 group (45.8+/− 15.4 years) was significantly lower than the average age of the 2016–18 group (57.9+/− 14.8) (0.000). M / F ratio was similar in the two groups: 119 / 69 (1,0.58) in 2001–2003 and 527 / 292 (1,0.55) in 2016–18 (p = 0.862). COM stones tended to more frequent in 2016–18 group than in 2001–03. COD stones were significantly more frequent in 2001–03 than in 2016–18. ST stone frequency was increased from 2001 to 03 to 2016–18. No increase of uric acid containing stones was observed in 2016–18. Results were confirmed after adjustment by age. Averages annual regional temperatures increased from 14 °C to 15.4 °C during the two observation periods. Conclusions No increase of UA stones was observed, probably due to the limited impact of the global warming in our temperate climate.

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Ureteral stent placement may be needed in patients undergoing robot-assisted radical prostatectomy (RARP) in cases of a large median lobe or previous transurethral surgery to prevent damage to the ureteral orifices. Unpredictable anatomic variants or technical difficulties in bladder neck section may necessitate intraoperative stent placement. We describe our original, simple, and feasible transurethral stent placement technique during RARP, which could be a valid option to preoperative technique.

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