Canis ISSN: 2398-2942

Airway abscessation

Introduction

  • Abscessation of the respiratory tract is rare in dogs.
  • Cause: foreign body, complication of other respiratory pathology.
  • Signs: depends on location to some extent; may include pyrexia, cough, dyspnea.
  • Diagnosis: radiography, bronchoscopy, ultrasonography.
  • Treatment: antibiotics, surgery.
  • Prognosis: guarded.

Pathogenesis

Etiology

Predisposing factors

General
  • Immunosuppression or general debilitation.

Pathophysiology

  • Abscessation may occur in:
    • Upper respiratory tract: larynx, trachea.
    • Lower respiratory tract: bronchi, pulmonary parenchyma.
  • Focal damage and/or reduced local immunity → infection.
  • Infection may spread locally, along airways or via hematogenous route.
  • Clinical signs result from:
    • Loss of functional pulmonary parenchyma.
    • Airway obstruction.
    • Loss of functional pulmonary capacity, eg pyothorax Pyothorax.
    • Systemic spread of infection.
  • Hypertrophic pulmonary osteopathy (HPOA) Hypertrophic osteopathy may develop.

Timecourse

  • Weeks to months.

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.
  • Valentine A, Smeak D, Allen D, Mauterer J & Minihan A (1996) Spontaneous pneumothorax in dogs. Comp Cont Ed Pract Vet 18 (1), 53-62 VetMedResource.
  • Salisbury S K, Forbes S & Blevins W E (1990) Peritracheal abscess associated with tracheal collapse and bilateral laryngeal paralysis in a dog. JAVMA 196 (8), 1273-1275 PubMed.
  • Sotwater J L & Lamb C R (1989) Ultrasonography of non-cardiac thoracic disease in small animals. JAVMA 195 (4), 514-520 PubMed.
  • White R A S & Lane J G (1988) Pharyngeal stick penetration injuries in the dogJSAP 29 (1), 13-35 Wiley Online Library.


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