Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , the degree of interstitial edema has decreased . There may be small persistent bilateral effusions , smaller than compared to prior . Streaky left basilar opacity is identified . The cardiac silhouette is enlarged but unchanged . Atherosclerotic calcifications again noted at the aortic arch . Severe degenerative changes of the shoulders bilaterally .
    OUTPUT:
    
Interval decrease in degree of pulmonary edema . Probable small residual bilateral effusions , also decreased . Streaky left basilar opacity potentially atelectasis although infection is not excluded .