Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . The lungs are clear . The cardiomediastinal silhouette is stable , noting prominence of the upper mediastinum , which is due to tortuosity of the vessels as seen on CTA neck recently performed . Cardiomediastinal silhouette is otherwise unremarkable with a tortuous descending thoracic aorta . Degenerative change is seen at the right shoulder .
    OUTPUT:
    
No acute cardiopulmonary process .