title: [Radiologic findings in non-Wilms' renal tumors in children].
abstract: OBJECTIVE
  To analyze the radiologic findings of non-Wilms' renal tumors in children.
  
  
  METHODS
  This is a retrospective study of 26 patients with histologically confirmed non-Wilms' renal tumors. The following variables were evaluated on radiological studies: location, size, margins, necrosis, hemorrhage, calcifications, subcapsular hematoma, adenopathies, and metastases. Age and clinical presentation were also analyzed.
  
  
  RESULTS
  We found 11 mesoblastic nephromas (predominantly solid masses, ill-defined margins, necrosis, hemorrhage, and peritumoral collections; mean patient age, 15 years old); 7 multilocular cystic nephromas (multicystic masses, thickened septa, well-defined margins, capsule, and partial involvement of the kidney; patient age range: 5 to 12 months); 4 renal carcinomas (one with dense calcifications, one mass in the pyelocaliceal system, one with infiltration of the excretory tract, one solid infiltrating mass, retroperitoneal adenopathies, and one metastasis; age range: 2 to 15 years); one clear cell sarcoma (circumscribed solid mass with necrosis and retrocaval adenopathy in a two-year-old boy); one rhabdoid tumor (hypodense mass, ill-defined margins, retroperitoneal adenopathy, vesical clots, and synchronous intracranial tumor, in a six-month-old boy); one intrarenal neuroblastoma (infiltrating solid mass, necrosis, retroperitoneal adenopathy, and bone marrow infiltration in an eight-year-old boy); and one angiomyolipoma (tumor in the upper pole, extrarenal growth, hypoenhancing, and two fatty lesions in the contralateral kidney, in a ten-year-old patient with tuberous sclerosis).
  
  
  CONCLUSIONS
  Radiology, together with clinical and epidemiological data, enables the diagnostic work-up of pediatric renal tumors. Histological diagnosis remains indispensable.
authors.affiliation: Servicio de Radiodiagnóstico. Hospital Infantil Universitario La Fe. Valencia. España. laparra_cri@gva.es
authors.forename: C
authors.initials: C
authors.lastname: La Parra Casado
authors.forename: D
authors.initials: D
authors.lastname: Muro Velilla
authors.forename: R
authors.initials: R
authors.lastname: Molina Fàbrega
authors.forename: C
authors.initials: C
authors.lastname: Sangüesa Nebot
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography