title: A case of bilateral renal masses: dilemmas in their evaluation and management.
authors.affiliation: Medical School, University of Oxford, UK.
authors.forename: Emily J
authors.initials: EJ
authors.lastname: Tweed
authors.affiliation: Medical School, University of Oxford, UK.
authors.forename: Ian S D
authors.initials: IS
authors.lastname: Roberts
authors.affiliation: Medical School, University of Oxford, UK.
authors.forename: David
authors.initials: D
authors.lastname: Cranston
authors.affiliation: Medical School, University of Oxford, UK.
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Winearls
keywords: oncocytoma; oncocytosis; renal biopsy; small renal mass