Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The lungs are mildly hyperinflated and the diaphragms are flattened . An opacity at the left lung base is new . No pneumothorax . Probable small left pleural effusion . Hilar contours are normal . Moderate cardiomegaly is unchanged .
    OUTPUT:
    
1 . A new opacity at the left lung base is concerning for pneumonia . 2 . The lungs are mildly hyperinflated and diaphragms are flattened consistent with emphysematous changes .