Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal somewhat linear opacity at the right costophrenic angle is likely atelectasis . Elsewhere , the lungs are clear . Cardiomediastinal silhouette is stable . Left chest wall dual lead pacing device is again noted . Chronic left lateral rib fractures are noted . Median sternotomy wires are intact . Partially visualized stent seen in the abdomen .
    OUTPUT:
    
No acute cardiopulmonary process .