18 month old Rat Terrier

Findings

There is increased opacity in the thoracic cavity on all projections. The lung lobe margins are rounded and retracted with visible fissure lines, indicating pleural effusion. The opacities in the thoracic cavity include soft tissue and gas opacity with a granular appearance. This is mostly present on the right side, and the diaphragm is not visible on the right. The cardiac silhouette is displaced to the left by this mass effect. The left hemithorax is more normal in appearance. There is a small volume pneumothorax visible in the left caudal thorax on the ventrodorsal projection. The normal hepatic silhouette is not visible in the abdominal cavity, and the stomach is positioned more cranially. There is poor detail in the abdomen suggesting peritoneal effusion.