Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged . There may be a small apical left pneumothorax , evidenced by an apparent pleural line just inferior to the posterior second rib . There is a left - sided pigtail catheter with bilateral pleural effusions and a retrocardiac opacity , for which developing pneumonia could be considered in the appropriate clinical setting .
    OUTPUT:
    
1 . Possible small apical left pneumothorax . 2 . Retrocardiac opacity for which a developing pneumonic can be considered in the appropriate clinical setting .