Prolapsed benign polyp of ureter associated with giant ureteral calculus.

We report a case of a benign fibroepithelial polyp of the lowermost ureter, which prolapsed into the bladder and was associated with a huge, impacted ureteral stone. The polyp was considered to have resulted from chronic irritation of the ureteral mucosa caused by the stone. Review of the literature showed that six out of 74 reported cases had concomitant stones but the polyp was apparently caused by the calculi in only one case.