Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There is persistent blunting of the left costophrenic angle which may be due to a trace pleural effusion and / or atelectasis . No new focal consolidation is seen . The right lung is clear . The cardiac and mediastinal silhouettes are stable . There has been interval removal of a nasogastric tube .
    OUTPUT:
    
Possible trace left pleural effusion . No focal consolidation .