title: [Renal oncocytoma. Retrospective study of 38 cases].
abstract: 38 cases of renal oncocytoma were recognized at Cochin's hospital from 1982 to 1991. Accurate diagnosis was not possible before performing surgery. However, a benign tumor appearance on the preoperative morphologic investigations and an evocative peroperative macroscopic aspect of renal oncocytoma, allowed us to realize a conservative surgery in 4 cases. Follow-up of 27 patients (11 lost to follow-up) showed a benign clinical behaviour in all cases, de spite of invasion of the perirenal fat in 2 cases, and tumoral thrombosis of a proximal branch of the renal vein in 1 case. No metastases occurred after a mean follow-up of 32.5 months, within range from 11 to 101. Our experience as well as the literature leads us to believe that renal oncocytoma is a benign tumor. We conclude that conservative surgery must be systematically considered when peroperative histological examination assert the diagnosis of renal oncocytoma, especially when the tumoral diameter is less than 5 cm.
authors.affiliation: Service d'Urologie, Hôpital Cochin, Paris.
authors.forename: F
authors.initials: F
authors.lastname: Bennis
authors.forename: C
authors.initials: C
authors.lastname: Peyret
authors.forename: M
authors.initials: M
authors.lastname: Zerbib
authors.forename: T
authors.initials: T
authors.lastname: Rousseau
authors.forename: T
authors.initials: T
authors.lastname: Flam
authors.forename: S
authors.initials: S
authors.lastname: Deslignières
authors.forename: A
authors.initials: A
authors.lastname: Steg
authors.forename: B
authors.initials: B
authors.lastname: Debré
mesh_terms: D000236:Adenoma / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014567:Urography
vernacular_title: Oncocytome rénal. Etude rétrospective de 38 cas.