Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity overlying the spine on lateral view is increased from ___ . Mediastinal contours , hila , and cardiac borders are normal . There is no pulmonary edema , pneumothorax , or pleural effusion .
    OUTPUT:
    
Opacity overlying the spine is increased from ___ and could represent aspiration pneumonia or atelectasis .