Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are unchanged with increased lateral convexity of the right mediastinal contour in the region of the ascending thoracic aorta suggesting that it may be dilated or tortuous . . The lungs are clear . There is no pneumothorax or pleural effusion . The osseous structures are unremarkable
    OUTPUT:
    
No acute cardiopulmonary abnormalities Stable appearance of the mediastinum