Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes which accentuate the bronchovascular markings . Given this , there may be subtle left base opacity which could be due to atelectasis , aspiration , or early pneumonia . Left perihilar bronchial wall thickening is noted . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable . There is no pulmonary edema . Radiopaque feet is noted overlying the right lung base .
    OUTPUT:
    
Low lung volumes which accentuate the bronchovascular markings . Subtle left base opacity could be due to atelectasis although underlying pneumonia is not excluded the appropriate clinical setting . Left perihilar bronchial wall thickening .