Constrictive Bronchiolitis Obliterans in a Dog

Author:

Wylie Stacey Lynn1,Langlois Daniel1,Carey Stephan1,Nelson Nathan C.1,Williams Kurt J.1

Affiliation:

1. From NorthStar VETS, Robbinsville, New Jersey (S.L.W.); Department of Small Animal Clinical Sciences (D.L., S.C.), and Department of Pathobiology and Diagnostic Investigation (K.J.W.), College of Veterinary Medicine, Michigan State University, East Lansing, Michigan; and College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina (N.C.N.).

Abstract

ABSTRACTA 2 yr old, neutered male rottweiler was evaluated for a chronic cough that had acutely worsened. Computed tomographic examination revealed a diffuse alveolar pattern in the right, middle, and left cranial lung lobes. Aerated parenchymal tissue was not observed in the left cranial lung lobe, and both lobes were markedly decreased in volume. Lobectomy of the right middle and left cranial lung lobes was performed. Histopathologic examination of both lungs identified alveolar collapse associated with marked chronic bronchial and bronchiolar luminal concentric fibrosis leading to reduced airway lumen diameter and bronchiolar destruction. The clinical signs and airway pathology were consistent with constrictive bronchiolitis obliterans. The dog remained stable for over 2 yr with glucocorticoid therapy and intermittent antimicrobics. Although the polypoid form of bronchiolitis obliterans has been described in cattle and occasionally in dogs, constrictive bronchiolitis obliterans has not been reported previously in veterinary species.

Publisher

American Animal Hospital Association

Subject

Small Animals

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