Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate symmetrically inflated lungs . There is no opacity convincing for pneumonia . Cardiomediastinal and hilar contours are within normal limits . Aorta appears tortuous . There is no pneumothorax or pleural effusion . No air under the right hemidiaphragm is seen .
    OUTPUT:
    
Markedly tortuous thoracic aorta . A component of dilation is possible in the ascending aorta and arch regions . No radiographic evidence of pneumonia or congestive heart failure .