Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Hazy opacity about the right heart border in the right lower lobe and in the medial left lower lobe could reflect an underlying infectious process in the appropriate clinical setting . There is no pneumothorax , pleural effusion , or overt pulmonary edema .
    OUTPUT:
    
Bilateral lower lobe hazy opacities , compatible with pneumonia or aspiration .