Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . The cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures , but no evidence of overt pulmonary edema . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes , without acute cardiopulmonary abnormality .