title: Supernumerary kidney: typical and atypical features.
abstract: The clinical and radiologic features of three children with accessory renal units are presented. On the basis of the pyelographic and ultrasound findings, the first two clearly had free supernumerary kidneys. The third had a more complex "supernumerary variant," wherein the accessory renal unit formed the isthmus of a horseshoe or "pseudohorseshoe" kidney.
mesh_terms: D000293:Adolescent; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D009942:Organometallic Compounds; D004369:Pentetic Acid; D011877:Radionuclide Imaging; D016284:Technetium Tc 99m Pentetate; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D009942:Organometallic Compounds; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate