...Takahisa Nakamoto; Mikio Igawa; Masayuki Fukushima; Fumio Shimamoto; Tsuguru Usui Benign tumors in the renal pelvis are unique and rarely reported. We report a case of a benign polyp in the renal pelvis. A 68-year-old woman presented with a mass in the right renal sinus and underwent right...

..., and the focal inflammatory and sclerogenous lesions on the interstitium and the atrophic and necrotic lesions on the renal parenchyma were registered histopathologically. In autopsy of dead subjects, whose death was caused by endemic nephritis, Bulgarian authors found the following tumors: polyps...