title: Wilms' tumor: a rational use of preoperative imaging.
abstract: OBJECTIVE
  To determine whether a preoperative imaging protocol relying predominantly on a chest X-ray film (CXR) and ultrasound in patients with Wilms' tumor is adequate for patient management and to determine the frequency more sophisticated imaging, in particular, computed tomography (CT), is required.
  
  
  METHODS
  Historical cohort study at a tertiary pediatric hospital.
  
  
  METHODS
  60 consecutive patients with Wilms' tumor treated at our institution between 1980 and 1990.
  
  
  METHODS
  The preoperative imaging was recorded and 2- and 4-year survival were compared with the National Wilms' Tumor Study.
  
  
  RESULTS
  100% of patients had a preoperative CXR, 95% abdominal ultrasound, 5% abdominal CT, 13% chest CT, 47% abdominal X-ray, 2% aortography, 5% cavography, and 35% intravenous urography. The overall 2- and 4-year survivals of 92% and 90%, respectively, did not statistically differ from the National Wilms' Tumor Study 2- and 4-year survivals of 94% and 91%.
  
  
  CONCLUSIONS
  A preoperative imaging protocol relying predominantly on a CXR and abdominal ultrasound does not reduce survival. Other more sophisticated imaging, in particular, CT, is not required in the majority of cases and is warranted only when a CXR or ultrasound is unable to resolve relevant management problems.
authors.affiliation: Department of Radiology, Royal Childrens Hospital, Melbourne, Australia.
authors.forename: M R
authors.initials: MR
authors.lastname: Ditchfield
authors.forename: J F
authors.initials: JF
authors.lastname: De Campo
authors.forename: K D
authors.initials: KD
authors.lastname: Waters
authors.forename: T M
authors.initials: TM
authors.lastname: Nolan
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D011877:Radionuclide Imaging; D013909:Thorax / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D009396:Wilms Tumor / Q000000981:diagnostic imaging* / Q000401:mortality / Q000601:surgery