Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Compared to prior radiograph , there is increased right lower lung opacity , which likely reflect free or loculated pleural effusion , but infectious process can not be excluded . Left mid lung linear streak is again seen , which could be focal atelectasis versus focal bruising related to prior chest tube insertion . Cardiomediastinal and hilar contours are otherwise stable .
    OUTPUT:
    
Increased right lower lung opacity , likely free / loculated pleural effusion however infectious process such as aspiration can not be excluded .