title: Sonography of acute appendicitis in children: 7 years experience.
abstract: OBJECTIVE
  The objective of this prospective study was to determine the accuracy in diagnosing appendicitis in children by using high-resolution graded compression sonography.
  
  
  METHODS
  During a 7-year period, 3859 children (mean age 9.9 years) with clinically suspected appendicitis were evaluated by sonography with the graded compression technique. The ultrasound results were correlated with the intraoperative and histopathological findings or clinical outcome.
  
  
  RESULTS
  High-resolution sonography was performed in 3859 children. Of the 610 patients who underwent a laparotomy, 494 had histologically proven acute or perforated appendicitis (prevalence 13%). In these children, sensitivity, specificity and overall accuracy of sonography were 90%, 97% and 96%, respectively. The reasons for false-negative and false-positive results are discussed.
  
  
  CONCLUSIONS
  Although the use of ultrasound to diagnose acute appendicitis in children has excellent results, the decision for surgery remains a clinical one because of the continuing false-negative and false-positive results from sonography.
authors.affiliation: Department of Paediatric Radiology, Kinderklinik, Technischen Universität, München, Germany.
authors.forename: H B
authors.initials: HB
authors.lastname: Hahn
authors.forename: F U
authors.initials: FU
authors.lastname: Hoepner
authors.forename: T
authors.initials: T
authors.lastname: Kalle
authors.forename: E B
authors.initials: EB
authors.lastname: Macdonald
authors.forename: F
authors.initials: F
authors.lastname: Prantl
authors.forename: I M
authors.initials: IM
authors.lastname: Spitzer
authors.forename: D R
authors.initials: DR
authors.lastname: Faerber
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D001062:Appendectomy; D001064:Appendicitis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D003951:Diagnostic Errors; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007223:Infant; D007416:Intestinal Perforation / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008297:Male; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012422:Rupture, Spontaneous; D012680:Sensitivity and Specificity; D014463:Ultrasonography