title: [Renal oncocytoma with cystic degeneration: a case report].
abstract: A 45-year-old man was referred to our department because of a right renal mass which was incidentally found at a health screening. Ultrasound sonography, computerized tomography and magnetic resonance imaging showed a hypovascular tumor 3 cm in diameter with the fluid at the upper pole of the right kidney, implicating that the tumor was renal cell carcinoma originating from a renal cyst wall, or with central necrosis. A radical nephrectomy was therefore performed. The tumor was dark-brown and contained brown fluid. The histopathological findings showed renal oncocytoma with cystic degeneration.
authors.affiliation: Department of Urology, Osaka Medical Center for Cancer and Cardiovascular Diseases.
authors.forename: R
authors.initials: R
authors.lastname: Imamura
authors.forename: T
authors.initials: T
authors.lastname: Kinouchi
authors.forename: N
authors.initials: N
authors.lastname: Meguro
authors.forename: O
authors.initials: O
authors.lastname: Maeda
authors.forename: S
authors.initials: S
authors.lastname: Saiki
authors.forename: M
authors.initials: M
authors.lastname: Kuroda
authors.forename: M
authors.initials: M
authors.lastname: Usami
authors.forename: T
authors.initials: T
authors.lastname: Kotake
authors.forename: K
authors.initials: K
authors.lastname: Yoshizato
authors.forename: S
authors.initials: S
authors.lastname: Ishiguro
mesh_terms: D018249:Adenoma, Oxyphilic / Q000150:complications / Q000473:pathology*; D002292:Carcinoma, Renal Cell / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000150:complications / Q000473:pathology*; D007680:Kidney Neoplasms / Q000150:complications / Q000473:pathology*; D008297:Male; D008875:Middle Aged