title: [Ultrasound for initial evaluation of post-traumatic renal lesions in children].
abstract: OBJECTIVE
  To describe the findings and limitations of color doppler ultrasound (CDUS) compared to enhanced CT in the evaluation of pediatric renal trauma and to determine the indications for first line imaging work up.
  
  
  METHODS
  17 children (9 girls) aged 3 to 18 years were shown to have one or multiple post-traumatic renal lesions. All renal lesions were unilateral. All children presented with hematuria (microscopic (n=8), gross (n=7), not specified (n=2)). 16 had CDUS and enhanced CT (gold standard). A 13-year old girl had been imaged by both CDUS and IVU.
  
  
  RESULTS
  No correlation between the degree of hematuria and the severity of renal lesion could be found. Final diagnosis was: fracture with uro-hematoma (n=6), contusion (n=5), pedicular lesion (n=2), clotted ureter (n=1), intra cystic hemorrhage (n=1), subcapsular hematoma (n=1), urinoma with no evidence of fracture (n=1), extra-urinary lesion (n=7). In four cases, CDUS was abnormal but the diagnosis of fracture had not been made. In 3 cases, a uro-hematoma was present and CDUS misdiagnosed a pedicular lesion.
  
  
  CONCLUSIONS
  Imaging strategy should not rely on the type of hematuria. Presence of a urinoma alters the sensitivity of CDUS. When performed in ideal conditions, a comprehensive normal CDUS examination is probably sufficient to exclude a major renal injury.
authors.affiliation: Services de Radiologie, Chu de Rouen, rue de Germont, F-76031 ROUEN, France.
authors.forename: P
authors.initials: P
authors.lastname: Pietrera
authors.forename: Y
authors.initials: Y
authors.lastname: Badachi
authors.forename: A
authors.initials: A
authors.lastname: Liard
authors.forename: J N
authors.initials: JN
authors.lastname: Dacher
mesh_terms: D000058:Accidental Falls; D000063:Accidents, Traffic; D000293:Adolescent; D000367:Age Factors; D000465:Algorithms; D002648:Child; D002675:Child, Preschool; D003663:Decision Trees; D005260:Female; D006417:Hematuria / Q000209:etiology; D006801:Humans; D007668:Kidney / Q000293:injuries*; D008297:Male; D018579:Patient Selection; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000592:standards; D018615:Ultrasonography, Doppler, Color / Q000379:methods* / Q000592:standards*; D014567:Urography / Q000592:standards; D014949:Wounds, Nonpenetrating / Q000145:classification / Q000150:complications / Q000000981:diagnostic imaging*
vernacular_title: Les ultrasons dans l'exploration initiale des lésions rénales post-traumatiques de l'enfant.