Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: MILD CARDIOMEGALY IS CHRONIC . NEW INTERSTITIAL ABNORMALITY IN THE LEFT LOWER LOBE COULD REPRESENT PNEUMONIA , PARTICULARLY VIRAL OR NEED ASSISTANCE . PREVIOUS LEFT PLEURAL EFFUSION OR PLEURAL THICKENING HAS RESOLVED .
    OUTPUT:
    
PROBABLE ATYPICAL PNEUMONIA LEFT LOWER LOBE , OCCLUDING PNEUMOCYSTIS . MILD CARDIOMEGALY .