Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new , small , right - sided pleural effusion , and likely a trace left - sided effusion . Heart size and pulmonary vascularity remain within normal limits . The diffuse lower lung predominant septal thickening is present as well as poorly defined lower lung peribronchiolar opacities centrally in the infrahilar areas appear
    OUTPUT:
    
1 . Interval development of a small right - sided pleural effusion , and a trace left - sided effusion . 2 . The new bilateral lower lobe predominant interstitial abnormalities , which most likely represent an atypical pneumonia in the absence of ancillary findings of fluid overload .