Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is within normal limits . Bilateral perihilar opacities extending into the upper and lower lobes with diffuse prominence of the interstitium and cephalization of the vasculature are consistent with mild pulmonary interstitial edema . Linear opacities at the left base likely represent atelectasis . There is no consolidation or large pleural effusion . No pneumothorax .
    OUTPUT:
    
Mild to moderate pulmonary interstitial edema .