Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , PA and lateral radiographs demonstrate bilateral patchy opacities in a perihilar distribution in addition to prominence of the pulmonary vasculature likely indicating interstitial pulmonary edema . Minimal linear opacities in bibasilar lungs likely represent atelectasis , slightly improved compared to next preceding study . No pleural effusion or pneumothorax evident . There is an unchanged single - lead pacemaker with tip positioned in the right ventricle . Minimal degenerative changes are identified in the bilateral AC joints .
    OUTPUT:
    
Mild interstitial pulmonary edema .