title: Pyloric localisation in 57 dogs of breeds susceptible to gastric dilatation-volvulus in the UK using computed tomography.
abstract: OBJECTIVE
  Describe the location of the pylorus using CT in dog breeds susceptible to gastric dilatation-volvulus in the UK.
  
  
  METHODS
  Descriptive anatomical study. Abdominal CT scans of 57 client-owned dogs were reviewed to assess pyloric position relative to the 9th, 10th, 11th and 13th ribs and 2 and 3 cm caudal to the 13th rib at the 8, 9 and 10 o'clock positions. The angle of the pylorus from the centre of the abdominal cavity relative to the sagittal plane was also determined.
  
  
  RESULTS
  In 88 per cent of cases, the pylorus was located in the right cranioventral abdomen with 63 per cent positioned at the 9-10 o'clock position. The overall distance between the pylorus and right abdominal wall (RAW) at the 13th rib 10 o'clock position was equivalent to 29 per cent of ventral abdominal length, significantly greater than the median overall distance of ∼14 per cent of ventral abdominal length between the pylorus and RAW at the 9th or 10th rib 10 o'clock position (P<0.0001).
  
  
  CONCLUSIONS
  Common gastropexy locations may result in considerable displacement of the pylorus relative to its natural anatomic location. Further case-control studies are required to assess the clinical significance of this finding.
authors: School of Veterinary Science, University of Liverpool, Neston, UK.
authors: A W
authors: AW
authors: Tomlinson
authors: College of Veterinary Medicine, School of Veterinary and Life Sciences, Murdoch University, Perth, Australia.
authors: S M
authors: SM
authors: Lillis
authors: School of Veterinary Science, University of Liverpool, Neston, UK.
authors: A J
authors: AJ
authors: German
authors: School of Veterinary Science, University of Liverpool, Neston, UK.
authors: R D
authors: RD
authors: Burrow
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000517:prevention & control*; D004285:Dogs; D005260:Female; D013271:Gastric Dilatation / Q000517:prevention & control / Q000662:veterinary*; D008297:Male; D011708:Pylorus / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D018570:Risk Assessment; D013277:Stomach Volvulus / Q000517:prevention & control / Q000662:veterinary*; D014057:Tomography, X-Ray Computed; D006113:United Kingdom
keywords: Computed tomography (CT); GDV; Gastropexy; Pylorus; Recurrence