Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are new , left greater than right basilar opacities . The mid and upper lung fields are clear . No definite pleural effusion and no pneumothorax . Heart size is likely top - normal given AP projection . Unchanged prominence of the right hilum may reflect lymphadenopathy seen on prior cross - sectional imaging . Cardiomediastinal hilar silhouettes are otherwise normal .
    OUTPUT:
    
Left greater than right basilar opacities are concerning for pneumonia . Given the bilaterality , aspiration is a consideration .