Today’s case is an 11-year-old female neutered Golden Retriever mix with a 2-week history of dry, hacking cough, lethargy, and anorexia. What is your diagnosis?
FindingsThere is a large soft tissue mass dorsal to the carina which is depressing the mainstem bronchi ventrally. The mass is widening the mainstem bronchi on the dorsoventral projection, as well as widening the mediastinum cranial to the carina. There is a small amount of gas in the esophagus on the left lateral projection which appears to be deviated dorsally over the mass. The remainder of the pulmonary parenchyma and airways are normal. No abnormalities are noted in the pulmonary vasculature and the cardiac silhouette is normal.
- Hilar lymphadenopathy – round cell neoplasia such as lymphoma, histiocytic sarcoma, or granuloma
- Histiocytic sarcoma
A CT examination was performed that illustrates the ventral deviation, spreading, and compression of the mainstem bronchi.