Uropatía obstructiva secundaria a papiloma invertido de uréter

we report a new case of inverted papilloma of the ureter, with an uncommon clinic manifestation as a obstructive uropathy. in spite of the bening nature the inverted papilloma of the urinary tract, it can be multifocal and relapsing and it may be associated with low rate urothelial carcinomas. a precise pre-operative diagnosis is necessary for a conservative or endourologic treatment. the followup of these cases with periodic urography and cystoscopy is mandatory.