Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar silhouette is unremarkable . Lung volumes are relatively low , but otherwise clear without consolidation , pleural effusion or pneumothorax . Cholecystectomy clips project over the right upper quadrant . Old compression of a mid thoracic vertebral body is stable compared to prior .
    OUTPUT:
    
Low lung volumes without acute cardiopulmonary process .