“…Also, looking at the literature, most evidence suggesting that the distal ureteral involvement is associated with increased risk of upper tract recurrence following cystectomy was provided by studies which analyzed ureteral tissues removed en bloc with bladder during cystectomy rather than those on the results of intraoperative frozen section analysis of ureteral margins [5,13,16] . Meanwhile, Solsona et al [17] reported that most of the late recurrences after cystectomy were observed in the upper tract with multiple tumors, prostate involvement, and organ-confi ned tumors being signifi cant predictive factors. However, patients included in their series were quite different in characteristics from those included in ours, and they did not evaluate margin positivity of ureteral marginal status at cystectomy.…”