Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate slightly low lung volumes , accentuating bronchovascular crowding . Allowing for such , the cardiomediastinal silhouette is within normal limits . The thoracic aorta is moderately tortuous , with a dense calcifications involving the arch and descending portion . There is no confluent consolidation . There is no pneumothorax , vascular congestion , or pleural effusion . There may be chronic lingular scarring . Several clips are seen in the left upper quadrant . Osseous structures are diffusely demineralized .
    OUTPUT:
    
No acute cardiopulmonary process .