Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffuse bilateral parenchymal opacities . Known small bilateral pleural effusions are as seen on CT scan . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Diffuse bilateral parenchymal opacities , potentially multifocal pneumonia although edema is also possible .