Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pigtail pleural catheter has been placed at the base of the left chest with marked reduction in a large left - sided pleural effusion . A small left apical pneumothorax is present ; the pleural edge is located 8 mm from the chest wall . The heart is markedly enlarged with streaky residual left basilar opacification , although probably explained by atelectasis . The right lung remains clear aside from mild interstitial prominence in the lower lung most suggestive of mild vascular congestion , similar to the earlier exam .
    OUTPUT:
    
Status post placement of left pleural tube . Small associated left apical pneumothorax , not necessarily significant in the presence of an in situ chest tube , but follow - up radiographs are suggested to exclude any potential air leak .