Perspectives in veterinary medicine: Description and classification of bronchiolar disorders in cats

Reinero, Carol R.; Masseau, Isabelle; Grobman, Megan; Vientos-Plotts, Aida; Williams, Kurt

• Lesions involving both bronchioles and interstitium are challenging to determine which region suffered the initial insult before progression to other local regions. This underscores the need to take adequately large specimens from multiple regions of the lung (more and less affected) when submitting for histopathologic examination. alveolar ducts. The pathologic response to inhalation of asbestos, silica or silicates, aluminum, and coal (among others) targeting small airways is mural fibrosis with mild chronic inflammation leading to luminal narrowing. 2, 14 In humans, classic pneumoconiosis leading to pulmonary parenchymal fibrosis is considered a restrictive lung disorder, whereas mineral dust airway disease may present as an obstructive airway disorder. 10 6.2.1 | Case 2 • Identification of mineral dusts can be challenging unless a careful search with polarized light is used; very small particulates will be difficult to visualize using routine microscopy.