Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . A persistent moderate - sized left pleural space is similar to ___ . A narrow air fluid level in the left mid lung likely represents fluid within a bullae . Large curvilinear opacity representing a bleb overlies the right mid lung . Irregular left apical opacities are compatible with post - bullectomy changes . No focal consolidation or pleural effusion . No radiopaque foreign body .
    OUTPUT:
    
Stable moderate left apical pneumothorax and fluid within a left mid-lung bullae .