Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . The lungs remain hyperinflated . There is slight blunting of the posterior left costophrenic angle which may be due to a trace pleural effusion versus pleural thickening . Basilar atelectasis is seen . No definite focal consolidation . There is no pneumothorax . The cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Slight blunting of the posterior left costophrenic angle which may be due to a trace pleural effusion versus pleural thickening . Basilar atelectasis with possible involvement of the right middle lobe .