Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is mildly enlarged . Tortuous aorta . No focal opacification concerning for pneumonia evident . The bilateral costophrenic angles are not well seen ; however , this is likely due to poor penetration due to body habitus rather than a definitive pleural effusion . This area could be better assessed with a lateral chest radiograph . No osseous abnormalities identified .
    OUTPUT:
    
Bilateral low lung volumes . Poorly assessed costophrenic angles due to penetration could be further evaluated for pleural effusion with lateral view .