[Incidence of urothelial carcinoma of the bladder in males with chronic urinary retention].

The author studied all of the 1361 male patients that had been hospitalized from December 1986 to September 1990 for chronic urinary retention to determine the incidence of urothelial tumor of the bladder. Sixty-nine (5.07%) were found to have primary urothelial carcinoma of the bladder. However, in another study group comprised of 433 males over 55 with no problems of obstruction, 0.23% had a bladder tumor. This study underscores the role of urinary stasis in the development of urothelial carcinoma of the bladder.