Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The mild left apical pneumothorax measuring 9 mm is unchanged since the previous exam . The Swan - Ganz has been removed and there is a right jugular sheath projecting in the upper SVC . Slight decrease of the bilateral moderate pleural effusion . Stability of the bibasilar atelectasis . Status post median sternotomy for CABG . The severe cardiomegaly is unchanged . The left pectoral pacemaker is also unchanged .
    OUTPUT:
    
The mild left apical pneumothorax measuring 9 mm is unchanged .