Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and multiple midline skin ___ are noted within the anterior chest . The heart size is normal . The aorta is mildly tortuous but unchanged . There is no pulmonary vascular congestion . Streaky opacities in the left lung base likely reflect atelectasis with a trivial left pleural effusion . There has been interval improvement in the aeration of the right lung base with minimal residual atelectasis noted . No new areas of focal consolidation are seen . No pneumothorax is identified . Old bilateral rib fractures are noted . Mild loss of height of a low thoracic vertebral body is unchanged .
    OUTPUT:
    
Mild bibasilar atelectasis with trace left pleural effusion . No new areas of focal consolidation identified .