Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased perihilar haziness compared to the most recent prior study of ___ , with vascular prominence suggesting mild interstitial pulmonary edema . Prominence at the right hilum is unchanged from multiple prior studies . No significant pleural effusion or pneumothorax is detected . Patchy opacities in the bilateral lung bases on the left greater than the right are concerning for multifocal pneumonia . The cardiac silhouette is top normal in size , but stable . The mediastinal contours are within normal limits with tortuosity of the thoracic aorta , as before . Multilevel mild degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Mild interstitial pulmonary edema . Patchy bibasilar opacities concerning for multifocal pneumonia .