Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac size is normal . The aorta is tortuous . The lungs are clear . There is no pneumothorax or pleural effusion . Deviation of the trachea to the left and posterior displacement of the mid and upper trachea seen in the lateral views are unchanged . Calcification projecting in the right apex is also stable . There are mild degenerative changes in the thoracic spine
    OUTPUT:
    
No acute cardiopulmonary abnormalities