**7.6 Learning curve/surgeon volume**

The International Robotic Cystectomy Consortium reported a learning curve of twenty-one robotic procedures to achieve a surgical time cutoff of 390 minutes. In contrast, a learning curve of more than 30 procedures was required for a PSM rate below 5%. Beyond 50 cases an improvement in the surgeon's performance (a decrease mean operative time and a higher lymph node yield) has been seen [28, 32, 40].
