title: Pyourachus: CT manifestations.
abstract: OBJECTIVE
  To assess CT findings of pyourachus.
  
  
  METHODS
  Computed tomography of two patients with surgically proven pyourachus was reviewed.
  
  
  RESULTS
  The CT characteristics of pyourachus include (a) midline location deep to the rectus abdominis muscle; (b) conical shape extending from a tip at the umbilicus to a base over the bladder dome; (c) peripheral inflammatory changes in subcutaneous tissues, rectus abdominis muscle, and mesenteric fat; and (d) intraperitoneal fluid or abscess (if perforation has occurred).
  
  
  CONCLUSIONS
  Abdominal CT demonstrates characteristic findings in pyourachus that should allow differentiation from other abdominal-pelvic masses.
authors.affiliation: Mallinckrodt Institute of Radiology, St. Louis Children's Hospital, Washington University School of Medicine, MO 63110, USA.
authors.forename: T E
authors.initials: TE
authors.lastname: Herman
authors.forename: G D
authors.initials: GD
authors.lastname: Shackelford
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007239:Infections / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D014057:Tomography, X-Ray Computed; D014496:Urachal Cyst / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery