Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . Sternotomy wires appear grossly intact and unchanged in position from the prior exam . The heart is enlarged . The cardiomediastinal and hilar contours are stable . Lung volumes are low . Streaky opacities at the base of the left lung are most consistent with atelectasis . There is no evidence of pleural effusion or pneumothorax .
    OUTPUT:
    
Sternotomy wires appear intact and are unchanged in position from the prior exam . Left basilar atelectasis . No evidence of focal consolidation .