Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the chest and mediastinal drains . There is a small left pleural effusion . Linear atelectasis in the right mid lung . Calcification noted at the left apical pleura . No definite pneumothorax seen . A right internal jugular catheter terminates in the distal SVC . Previous median sternotomy noted .
    OUTPUT:
    
Small left pleural effusion . No pneumothorax seen .