title: Neonatal acute appendicitis: a proposed algorithm for timely diagnosis.
abstract: BACKGROUND
  Neonatal appendicitis (NA) is a rare disease with a high mortality. The diagnosis has never been reported preoperatively and is notoriously difficult to make.
  
  
  METHODS
  Charts since 1995 were retrospectively reviewed for discharge or death diagnoses of appendicitis in neonates younger than 28 days. We report 3 cases of NA seen at our institution during this period.
  
  
  RESULTS
  All 3 infants were previously well, born at term, and presented with signs consistent with abdominal sepsis. The first 2 diagnoses were not made until autopsy. The third case survived after having an urgent computed tomographic scan, exploratory laparotomy, and appendectomy.
  
  
  CONCLUSIONS
  The literature summarizing common presenting features of NA is reviewed. We present an algorithm to guide the workup of these neonates to facilitate earlier diagnosis and potentially improve outcomes.
authors.affiliation: Department of Paediatrics, Alberta Children's Hospital, University of Calgary, Alberta, Canada T3B6A8. kls.kevin.schwartz@gmail.com
authors.forename: Kevin L
authors.initials: KL
authors.lastname: Schwartz
authors.forename: Eli
authors.initials: E
authors.lastname: Gilad
authors.forename: David
authors.initials: D
authors.lastname: Sigalet
authors.forename: Weiming
authors.initials: W
authors.lastname: Yu
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Wong
mesh_terms: D000208:Acute Disease; D000465:Algorithms; D001064:Appendicitis / Q000150:complications / Q000151:congenital / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D020345:Enterocolitis, Necrotizing / Q000209:etiology; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D010535:Laparoscopy; D007813:Laparotomy; D008297:Male; D012189:Retrospective Studies; D012772:Shock, Septic / Q000209:etiology; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography