Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The cardiac silhouette is normal . The aorta is mildly tortuous with calcifications at the aortic knob . No pleural effusion , pulmonary edema , or pneumothorax . There is unchanged eventration of the right hemidiaphragm . Multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .