Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Subtle , increased density in the right middle lobe appears increased from the prior examination , and may reflect aspiration versus developing pneumonia . There is no pleural effusion , pneumothorax , or pulmonary edema . The heart is mildly enlarged .
    OUTPUT:
    
Low lung volumes with right middle lobe airspace consolidation which appears new from the prior examination , worrisome for aspiration versus developing pneumonia .