Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . No prior . The lungs are clear . There is no effusion or pneumothorax . Atherosclerotic calcifications noted at the aortic arch . Cardiomediastinal silhouette is otherwise unremarkable . Osseous and soft tissue structures are notable for mild hypertrophic changes in the spine and degenerative changes at the acromioclavicular joints .
    OUTPUT:
    
No acute cardiopulmonary process .