Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mildly low lung volumes resulting crowding of bronchovascular structures . There is no lobar consolidation , large pleural effusion , pneumothorax , or overt pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Low lung volumes without evidence of acute cardiopulmonary process .