Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increasing pulmonary opacification in the left mid and lower zones is present . In the absence of similar changes on the right or significant effusions , it is probable that this represents evidence of aspiration or pneumonia . No pneumothorax is seen . Extensive subcutaneous emphysema is present .
    OUTPUT:
    
New left lung infiltrates .