https://www.selleckchem.com/products/XAV-939.html 037]; P=0.001) were identified as independent risk factors for re-admission within 30 days after surgery. Within this prospective national cohort, the overall re-admission rate after inguinal hernia repair was 0.64%, slightly less among the patients undergoing ambulatory surgery. Half of re-admitted patients required surgical re-operation. Emergency hernia repair and prolonged duration of operation were risk factors for re-admission. Within this prospective national cohort, the overall re-admission rate after inguinal hernia repair was 0.64%, slightly less among the patients undergoing ambulatory surgery. Half of re-admitted patients required surgical re-operation. Emergency hernia repair and prolonged duration of operation were risk factors for re-admission. Partial nephrectomy (PN) for complex renal masses has a non-negligible risk of perioperative complications. Furthermore, late functional and oncological outcomes of patients submitted to these challenging surgeries still remain to be determined. To report the perioperative and mid-term oncological and functional outcomes of PN for complex masses (Preoperative Aspects and Dimensions Used for an Anatomical [PADUA] score≥10) in a large multicenter prospective observational study. We prospectively evaluated patients treated with PN for complex renal tumors at 26 urological centers (Registry of Conservative and Radical Surgery for Cortical Renal Tumor Disease [RECORD2] project). Multivariate logistic regression analyses explored the predictors of surgical complications. Multivariable Cox regression analyses estimated the hazard of renal function loss and disease recurrence. Kaplan-Meier estimates assessed the probability of survival. In total, 410 patients who underwent PN for complex masses were evaluat complications and excellent mid-term oncological and functional results. In this study, we evaluated peri- and postoperative outcomes of patients treated with partia