Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low leading to crowding of the bronchovascular structures . Despite this , there is no lobar consolidation , pneumothorax , or overt pulmonary edema . Blunting of the left costophrenic angle may reflect a small pleural effusion versus atelectasis . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Low lung volumes without evidence of acute cardiopulmonary process .