Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The sternotomy wires appear intact and appropriately aligned . There is a right PICC line , which terminates at the cavoatrial junction . There are persistent multifocal opacities bilaterally , which were better characterized on the recent CT , but improved compared to the chest radiograph dated ___ . The pulmonary vasculature is normal . The cardiomediastinal silhouette is stable . There are no pleural effusions . There is no pneumothorax .
    OUTPUT:
    
Persistent multifocal opacities bilaterally , improved since ___ , but stable compared to the CT on ___ .