Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a mildly tortuous thoracic aorta , similar to prior exam . The cardiomediastinal silhouettes are unchanged and within normal limits . The bilateral hila are unremarkable . The lungs are clear . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion . Mid thoracic spine degenerative change and kyphosis and mild thoracic spine scoliosis is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .