Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs are obtained . The lungs are clear with no evidence of consolidation , effusions or pneumothorax . Cardiomediastinal silhouette remains normal . Widening of the right AC joint is again noted , chronic , and compatible with prior trauma or surgery . Eventration of the right hemidiaphragm is present .
    OUTPUT:
    
No acute cardiopulmonary process .