Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiac silhouette is borderline enlarged , similar to the prior examination . Again noted is indistinct pulmonary vasculature with patchy bilateral opacity , improved since the most recent examinations . No focal consolidation is definitively identified , though can not entirely be excluded . There is no pleural effusion or pneumothorax . Left PICC tip projects over the mid SVC . Multiple surgical clips noted in the right upper quadrant .
    OUTPUT:
    
Overall improved appearance the lungs with improved aeration bilaterally but with persistent interstitial abnormalities . This could represent edema although infection or interstitial process are possible .