Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is mildly tortuous . Mediastinal and hilar contours are otherwise unremarkable and unchanged . The pulmonary vasculature is normal . Apart from minimal atelectasis in the right lung base , the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .