title: [Positioning diagnosis of magnetic resonance urography in ectopic ureter of children].
abstract: OBJECTIVE
  To explore the diagnostic value of magnetic resonance urography (MRU) in ectopic ureters.
  
  
  METHODS
  Seventeen female children with ectopic ureter were examined by sonography, intravenous urography (IVU), computer tomography (CT), MRU and so on. The mean age of the female children was 4.5 years (7 months approximately 12 years).
  
  
  RESULTS
  Seventeen patients were examined by sonography, including 3 dysplasia little kidneys, 1 kidney absence, 12 duplex kidneys with hydroureter, 1 normal.Seven patients were examined by IVV, including 3 hydronephrosis and 4 no image or not clear. Fourteen patients were examined by CT, including 3 dysplasia little kidneys, 11 duplex kidneys with hydronephrosis. Five were determined by cystoscope, including 2 ecto-pic urethral orifices which angiography could only display the expansion of ureter. All children were diagnosed by MRU and an accurate anatomical picture of the entire urinary tract was obtained.
  
  
  CONCLUSIONS
  To accurately and noninvasively depict the urinary tract and the independence of renal function, MRU may be used for patients with ectopic ureter undiagnosed with sonography and IVU.
authors.affiliation: Department of Urology, Central South University, Changsha 410008,China.
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Zhang
authors.forename: Xiongbing
authors.initials: X
authors.lastname: Zu
authors.forename: Benyi
authors.initials: B
authors.lastname: Fan
authors.forename: Lin
authors.initials: L
authors.lastname: Qi
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging / Q000379:methods*; D014513:Ureter / Q000002:abnormalities*; D014567:Urography / Q000379:methods*