title: Upper urinary tract inverted papillomas.
abstract: Inverted papilloma is a rare, benign tumor. Only 33 cases to date have been reported to have occurred in the upper urinary tract. These lesions have a male predominance, are difficult to diagnose, and are associated with urothelial malignancy. Because transitional cell carcinoma can present even 8 years after surgery and in other sites within the urinary system, careful follow-up is essential. This article adds 2 new cases and 1 follow-up of a previously reported case from 1990.
authors.affiliation: Department of Urology and Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.
authors.forename: A N
authors.initials: AN
authors.lastname: Chiura
authors.forename: A
authors.initials: A
authors.lastname: Wirtschafter
authors.forename: D H
authors.initials: DH
authors.lastname: Bagley
mesh_terms: D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D018308:Papilloma, Inverted / Q000175:diagnosis*