Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . As compared to prior examination , there has been interval development of diffuse bilateral parenchymal opacities . No definite focal consolidation , pleural effusion or pneumothorax identified .
    OUTPUT:
    
New diffuse bilateral parenchymal opacities , findings raise concern for atypical pneumonia . Interstitial pulmonary edema difficult to exclude .