Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Increased left basilar opacity has significantly increased likely large left pleural effusion with overlying atelectasis . Small left pneumothorax persists . Prominence of the left hilum may relate to left - sided pleural fluid ; however , underlying lymphadenopathy or consolidation is not excluded . Left aspect of the cardiac silhouette is not well assessed due to the left basilar consolidation ; however , the remainder of the cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Left hydropneumothorax . Significant interval increase in left basilar opacity , likely left pleural effusion with overlying atelectasis , underlying consolidation not excluded . Left perihilar opacity may relate to the above findings . However , underlying lymphadenopathy or additional consolidation is not excluded . Air-fluid level seen in the left upper hemithorax , which appears longer in the frontal view than on the lateral view can be seen in bronchopleural fistula .