Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is borderline enlarged . Mediastinal and hilar contours are unremarkable . There is crowding of the bronchovascular structures but no pulmonary edema is seen . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary abnormality .