Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left apical pneumothorax has slightly improved , measuring 8 mm . There is no right pneumothorax . The rest of the exam is unchanged in this patient with recent CABG with bibasilar atelectasis , small bilateral pleural effusions . Mediastinal and cardiac contours are unchanged and the right jugular line ends in lower SVC .
    OUTPUT:
    
Left small apical pneumothorax has slightly improved .