Hypertrophic osteopathy in a dog associated with chronic lung lobe torsion

Abstract

A 6‐year‐old, male, neutered, crossbreed dog was presented with a history of lethargy, chronic cough, right thoracic limb lameness, bilateral distal thoracic limb swelling and non‐healing skin wounds. Computed tomography showed bilateral forelimb irregular periosteal reaction and chronic right cranial lung lobe torsion, with secondary bronchiectasis. The affected lung lobe was surgically excised, the right radius was biopsied, and postoperative antimicrobial therapy was prescribed. Histopathology and bacterial culture confirmed chronic lung lobe torsion, associated bacterial bronchopneumonia, and right radial hypertrophic osteopathy. Two months after starting treatment, the respiratory signs resolved and the soft tissue swelling and lameness markedly improved. To the authors’ knowledge, this is the first case report describing hypertrophic osteopathy suspected secondary to chronic lung lobe torsion in a dog.