Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . The aorta demonstrates diffuse atherosclerotic calcifications . Mediastinal and hilar contours are relatively unchanged . There is mild pulmonary vascular congestion . Streaky opacities in the lung bases may reflect areas of atelectasis . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild pulmonary vascular congestion . Patchy opacities in lung bases may reflect areas of atelectasis , but infection is not completely excluded .