title: [Percutaneous treatment of a renal pelvis-calyx cholesteatoma].
abstract: A 54-year-old women reported recurrent pain in one side. Radiological and ultrasonographic examination revealed a mass in the left renal pelvis and the lower calyx. With percutaneous calycopyeloscopy keratinous fragments of a cholesteatoma were found and extracted during the same procedure. Up to now, malignant degeneration of a cholesteatoma has never been reported in the literature. Therefore, a conservative surgical treatment is acceptable.
authors.affiliation: Urologische Klinik, Ruhr-Universität Bochum, Klinikum Marienhospital, Herne.
authors.forename: W
authors.initials: W
authors.lastname: Diederichs
authors.forename: L
authors.initials: L
authors.lastname: Hertle
authors.forename: H
authors.initials: H
authors.lastname: Schulze
mesh_terms: D002781:Cholesteatoma / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D007670:Kidney Calices / Q000473:pathology / Q000601:surgery*; D007674:Kidney Diseases / Q000473:pathology / Q000601:surgery*; D007682:Kidney Pelvis / Q000473:pathology / Q000601:surgery*; D008875:Middle Aged; D009403:Nephrostomy, Percutaneous; D014057:Tomography, X-Ray Computed
vernacular_title: Perkutane Therapie eines Nierenbeckenkelch-Cholesteatoms.