title: Metanephric adenoma in an 8-year-old child: case report and review of the literature.
abstract: Metanephric adenoma (MA) is a renal tumor that is rarely found in children. We present a case of MA that was incidentally discovered in an 8-year-old child on computed tomography. We also review the literature regarding this lesion in the pediatric population. There are certain imaging features of MA that may suggest the diagnosis preoperatively. Metanephric adenoma is often hyperechoic on sonography, hyperdense on noncontrast computed tomography scans, and of low signal intensity on T1- and T2-weighted magnetic resonance images. Nephron sparring surgery has been performed in several cases. However, the distinction of MA from other metanephric lesions as well as from Wilms' tumor and papillary renal cell carcinoma may not be readily apparent at the time of surgery.
authors.affiliation: Department of Radiology, New York University Medical Center, New York, NY 10016, USA. john.amodio@med.nyu.edu
authors.forename: John B
authors.initials: JB
authors.lastname: Amodio
authors.forename: Ellen
authors.initials: E
authors.lastname: Shapiro
authors.forename: Lynne
authors.initials: L
authors.lastname: Pinkney
authors.forename: Rafael
authors.initials: R
authors.lastname: Rivera
authors.forename: Naomi
authors.initials: N
authors.lastname: Strubel
authors.forename: Diah
authors.initials: D
authors.lastname: Douglas
authors.forename: Nancy
authors.initials: N
authors.lastname: Fefferman
mesh_terms: D000236:Adenoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D001064:Appendicitis / Q000000981:diagnostic imaging; D002292:Carcinoma, Renal Cell / Q000175:diagnosis; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D033162:Incidental Findings; D007680:Kidney Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D009396:Wilms Tumor / Q000175:diagnosis