Today’s case is a 9 year old domestic short haired cat with a 1-year history of episodic, non-productive coughing.
There is a mixed, bronchointerstitial pattern throughout the lungs. “Donuts” are visible on the v/d projection overlying the diaphragm.
Inflammatory airway disease
Bronchoscopy revealed mucus plugging of small airways and evidence of inflammation. The bronchial lavage was also inflammatory in nature. These mild bronchial infiltrates are characteristic of inflammatory airway disease in cats. In this case, fibers found in the lavage fluid were similar to those in the natural kitty litter the owner was using, which may have caused a foreign body reaction.