Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . There are low lung volumes causing bronchovascular crowding . There is mild pulmonary vascular congestion . There are small bilateral pleural effusions . There is no pneumothorax . Lingular scar appears similar to prior . There is a left chest cardiac device with lead tips in the right atrium and right ventricle . Cardiomegaly is mild . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Mild pulmonary vascular congestion and small bilateral pleural effusions . Adjacent basilar lung opacities probably reflect atelectasis but coexisting pneumonia is not fully excluded .