Abstract:

This article reports a case of renal pelvis and bladder villous adenoma.The patient was admitted with a history of gross hematuria，urinary frequency，urgency，and dysuria for half a month.CT imaging from an external hospital revealed masses in the right kidney and bladder，suspected to be malignant，along with right renal hydronephrosis and bilateral kidney stones.The patient had a long history of stones and infections，with a serum creatinine level of 159 μmol/L.Initial management involved transurethral resection of the bladder tumor to identify the nature of the tumor，but due to viscous urine，the tumor could not be fully excised，and the pathology diagnosis was bladder villous adenoma.Given that the bladder lesion was benign，priority was given to addressing the right kidney tumor.One month later，the patient underwent robot-assisted laparoscopic right nephrectomy for renal pelvis cancer，and pathology revealed renal pelvis and calyx villous adenoma with high-grade intraepithelial neoplasia.Postoperatively，the patient developed urethral catheter obstruction，and after catheter removal，experienced persistent dysuria，with serum creatinine fluctuating between 180-200 μmol/L.The multidisciplinary consultation by the Guangdong Urological Association led to a recommendation for partial cystectomy，with no immediate plans for radiotherapy or chemotherapy.Two months later，the patient underwent partial cystectomy，with a subsequent reduction in mucus-like urine，improved urinary tract infections，and a serum creatinine level of 169 μmol/L.This case suggests that surgical resection is an effective treatment for urinary tract villous adenomas.

Key words: Renal pelvis tumor, Bladder tumor, Villous adenomas, Surgical resection