Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Blunting of the posterior costophrenic angles suggests small bilateral pleural effusions are identified . On the frontal view there is more dense opacity at the left lung base without correlative finding on the lateral view suggesting at least some component of atelectasis . Superiorly , the lungs are clear . The cardiac silhouette there is mildly enlarged . Atherosclerotic calcifications noted within the aorta . Degenerative changes seen at the shoulders bilaterally . No displaced fractures there noted . Compression deformities in the mid thoracic spine are unchanged .
    OUTPUT:
    
Small bilateral effusions . More dense retrocardiac opacity on the frontal view suggests component of atelectasis as it is not clearly delineated on the lateral view although component of infection is possible .