Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear well - expanded lungs without pleural effusion or pneumothorax . There is mild cardiomegaly , the mediastinal contour is notable for tortuosity and dilatation of the aorta , unchanged . The right paratracheal stripe is widened by an osteophyte . Minimal right infrahilar peribronchial thickening may reflect chronic aspiration . There is multilevel degenerative change of the thoracic spine . There is no vertebral compression deformity .
    OUTPUT:
    
1 . No acute chest abnormality . 2 . Tortuous aorta , with dilation of the ascending aorta .