8 year old Labrador Retriever

Findings

The cardiac silhouette is markedly enlarged with elevation of the trachea. The heart occupies more than half the thoracic width on the dorsoventral projection. The pulmonary vasculature appears enlarged in the right caudal lung lobe and normal in the remaining lung lobes. There is a diffuse, patchy interstitial to alveolar pulmonary pattern that is most pronounced in the right caudal lung lobe. The musculoskeletal structures appear normal. The peritoneal detail appears decreased.