“…For decades, the schedule and methods for surveillance of UUT after RC have been discussed because of its characteristics of low prevalence (0.7–7.4%) [3], [7], [8], [12], [20]–[22], late diagnosis after postoperative 25–40 months [6], [7], [23], poor prognosis with a median survival of 10–20 months from diagnosis [6], [23], difficulty in detection of abnormal UUT findings in the changed abdomino-pelvic anatomy with diverted intestinal urinary tract of urinary diversions, and contaminated urine specimen from UUT with many degenerating desquamated intestinal epithelial cells to decrease the sensitivity of urine cytology. Many previous studies have attempted to identify several predictive risk factors of UUTR, however, their predictive values varied from those reported in other studies to remain controversial due to different characteristics of the enrolled patients [3], [24].…”