title: Inverted papilloma of the upper urinary tract.
abstract: Inverted papillomas of the upper urinary tract are rare lesions that have a male predominance. The associated symptoms are similar to those of other urothelial neoplasms. The tumors are considered benign and local excision has been advocated by many but long-term followup is lacking. We present a case of a locally excised inverted papilloma of the renal pelvis with a 3.5-year followup. While local excision appears to be ideal treatment, the difficulty with preoperative diagnosis and the reported coexistence of malignancy demand careful patient selection and close long-term followup. The biological potential of recurrence, multicentricity and malignancy is addressed.
authors.affiliation: Division of Urology, Sunnybrook Health Science Centre, University of Toronto, Ontario, Canada.
authors.forename: L
authors.initials: L
authors.lastname: Spevack
authors.forename: S
authors.initials: S
authors.lastname: Herschorn
authors.forename: J
authors.initials: J
authors.lastname: Srigley
mesh_terms: D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D018308:Papilloma, Inverted / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D011859:Radiography