Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aortic arch is calcified . The mediastinal and hilar contours are otherwise unremarkable . There is no pleural effusion or pneumothorax . Streaky opacity in the left lower lobe is consistent with minor unchanged scarring . Otherwise , the lung fields appear clear . Surgical clips project over the right upper quadrant of the abdomen .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .