Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is rotated somewhat to the right . Left lower lobe opacity may be due to aspiration and / or infection . No large pleural effusion is seen . The cardiac silhouette is top - normal to mildly enlarged . Mediastinal contours are grossly unremarkable . No pneumothorax is seen . Evidence of DISH is seen along the spine .
    OUTPUT:
    
Left base opacity could be due to aspiration or infection .