title: Ectopic supernumerary kidney, a cause of para-aortic mass: case report and review.
abstract: Ectopic supernumerary kidney is a rare congenital urinary tract abnormality. Because of the scarcity of published cases and atypical presenting symptomatology this entity frequently causes a diagnostic as well as therapeutic dilemma. We report a case of an unusually symptomatic supernumerary kidney that presented as back pain. Noncontrast CT scan showed a suspicious left-sided para-aortic mass, which prompted a percutaneous biopsy. Intravenous contrast CT scan revealed an anatomically and functionally free supernumerary kidney. The approach to diagnosis as well as management of supernumerary kidneys is discussed herein.
authors.affiliation: Department of Surgery, Saint Vincents Hospital, New York, New York, USA.
authors.forename: T R
authors.initials: TR
authors.lastname: Bernik
authors.forename: D J
authors.initials: DJ
authors.lastname: Ravnic
authors.forename: S F
authors.initials: SF
authors.lastname: Bernik
authors.forename: M K
authors.initials: MK
authors.lastname: Wallack
mesh_terms: D000008:Abdominal Neoplasms / Q000175:diagnosis; D000328:Adult; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging; D001416:Back Pain / Q000209:etiology; D003937:Diagnosis, Differential; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008297:Male; D014057:Tomography, X-Ray Computed; D014552:Urinary Tract Infections / Q000209:etiology