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Presumed acquired dynamic pectus excavatum in a cat
Chee Kin Lim1, Hock Gan Heng1, Lynn F Guptill1
1Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA.
Summary
This study describes a dynamic pectus excavatum (PE) in a cat, likely acquired secondary to chronic respiratory issues and steroid treatment. The condition
Area of Science:
- Veterinary Medicine
- Comparative Medicine
- Cardiovascular and Respiratory Systems
Background:
- Pectus excavatum (PE) is a congenital chest wall deformity.
- Acquired PE is less common, particularly in feline respiratory disease.
Observation:
- An 11-year-old domestic shorthair cat presented with dyspnea and open-mouth breathing.
- Radiographs revealed severe pectus excavatum (PE), retropharyngeal soft tissue thickening, and pulmonary changes.
Findings:
- Thoracic radiographs over 4 months showed a dynamic PE, present only on specific views.
- The dynamic PE was presumed acquired, linked to chronic upper respiratory disease and/or thoracic wall pliability from prednisolone treatment.
Implications:
- This case highlights a potentially acquired, dynamic form of PE in cats.
- Understanding acquired PE is crucial for diagnosing and managing feline respiratory and thoracic conditions.
- Further research may elucidate the mechanisms of dynamic PE in felines.
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