Canis ISSN: 2398-2942

Esophagus: diverticulum

Contributor(s): James Simpson, Kenneth Simpson

Introduction

  • Rare.
  • Cause: congenital or acquired.
  • Circumscribed sac or pouch created by dilation of esophagus or herniation of esophageal mucosa through defect in surrounding muscularis, most frequently cranial to thoracic inlet or just in front of diaphragm.
  • Signs: dysphagia, regurgitation, cough.
  • Diagnosis: radiography, esophagoscopy.
  • Sequelae: chronic esophagitis, ulceration, stricture, mediastinitis, aspiration pneumonia.
  • Treatment: epiphrenic diverticulectomy.
  • Prognosis: guarded to poor.

Pathogenesis

Etiology

  • Congenital or acquired.

Pathophysiology

  • Pulsion type (most common) - true diverticulum - circumscribed sac or pouch created by herniation of esophageal mucosa through defect in surrounding muscularis, most commonly cranial to thoracic inlet or just in front of diaphragm.
  • Traction type - wall has all layers of esophagus present - presumed due to periesophageal fibrosis, eg secondary to perforation by foreign body.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Pearson H et al (1978) Oesophageal diverticulum formation in the dog. JSAP 19 (6), 341-355 PubMed.
  • Lantz G C et al (1976) Epiphrenic esophageal diverticulectomyJAAHA 12 (5), 629-635 VetMedResource.


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