Korean Journal of Veterinary Service (한국동물위생학회지)

The Korean Society of Veterinary Service (한국동물위생학회)
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Lung lobe torsion in a dog with a tracheal stent for severe tracheal collapse

  • Taeho Lee (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University) ;
  • Aryung Nam (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University Veterinary Medical Teaching Hospital) ;
  • Dong-Kwan Lee (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University) ;
  • Han-Joon Lee (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University) ;
  • Kun-Ho Song (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University)
  • Received : 2023.09.07
  • Accepted : 2023.12.06
  • Published : 2023.12.30
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Abstract

A 7-year-old castrated male Pomeranian dog presented with severe goose honking cough and dyspnea. Thoracic radiographs revealed a narrowed tracheal diameter at the thoracic inlet, classified as tracheal collapse grade 4. Despite medical treatment, the dog's life-threatening airway obstruction did not improve. Subsequently, tracheal stent placement resulted in a significant improvement in respiratory condition, with no recurrence of symptoms observed during the 4-month period, except for coughing induced by excitement and anxiety. However, the patient presented with a one-week history of productive cough, exercise intolerance, and loss of appetite. Radiographs and computed tomography scans revealed torsion of the left cranial lung lobe. The patient underwent affected lung lobectomy, which involved the removal of the necrotized cranial portion and heavily congested caudal portion. Unfortunately, the patient did not recover and eventually passed away. Histopathological examination of the resected lung tissue confirmed coagulative necrosis and marked peribronchiolar edema, consistent with lung lobe torsion.

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References

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