Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable supine AP chest radiograph was obtained . The lungs are well expanded and clear . There is no focal consolidation , effusion , or pneumothorax . Dense opacities projecting over the left mid lung are unchanged since ___ . There are no abnormal cardiac or mediastinal contours . There is no displaced rib fracture .
    OUTPUT:
    
No acute cardiopulmonary process .