Imaging diagnosis--tracheobronchial zygomycosis in a cat.

Tracheobronchial zygomycosis is described in a cat with acute dyspnea. Zygomycetes are an uncommon opportunistic group of pathogens, and few examples have been described in feline patients. Radiographic, ultrasonographic, and computed tomography imaging allowed identification of tracheobronchial masses, with intraluminal and peribronchial involvement. Surgical removal was impossible and antifungal chemotherapy was ineffective. Feline zygomycosis is a serious condition that should be considered when tracheobronchial masses are identified.