Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The mediastinal and hilar contours are within normal limits . Low lung volumes result in crowding of bronchovascular structures with no overt pulmonary edema present . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
Low lung volumes without acute cardiopulmonary abnormality .