Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Bilateral pleural effusions are small , right greater than left . There is a large bleb in the right upper lung . Irregular opacity in the right mid to lower lung is most likely indicative of scarring though in the absence of prior imaging studies , other etiologic considerations are difficult to exclude . There is mild left basal atelectasis . Heart size appears top - normal . Mediastinal contour can not be assessed . Bony structures are intact .
    OUTPUT:
    
Bilateral pleural effusions , small , right greater than left with ill - defined opacity in the right lower lung most consistent with scarring though difficult to exclude pneumonia . Large bleb in the right upper lung .