Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . The patient is status post median sternotomy . There is mild blunting of the posterior left costophrenic angle , suggesting trace pleural effusion . No focal consolidation is seen . There is no evidence of pneumothorax . The cardiac silhouette is top normal . The aorta is somewhat tortuous .
    OUTPUT:
    
Probable small left pleural effusion . No focal consolidation .