Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low bilateral lung volumes . No focal consolidation , pleural effusion or pneumothorax identified . The size of the cardiac silhouette is enlarged but this may be secondary to magnification from the AP technique and low lung volumes . The tracheal stent again is noted to project over the thoracic inlet .
    OUTPUT:
    
Low bilateral lung volumes . No focal consolidation or evidence of pulmonary edema .