Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is tiny right pleural effusion , not definitely seen on comparison radiograph . Right pleural catheter is in place . There is tiny right pleural effusion , similar . New stable right basilar opacity , likely atelectasis . Stable right lower lateral chest wall emphysema . Stable mild left retrocardiac opacity . Normal heart size , pulmonary vascularity . Thoracolumbar curve .
    OUTPUT:
    
Tiny right apical pneumothorax , not definitely seen on prior exam . Otherwise stable exam .