Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent opacification of the left lung base with volume loss , findings consistent with chronic atelectasis . Prior mild pulmonary vascular congestion has decreased in the interval . A previously described relative area of ___ within the right upper lung has resolved and likely reflected asymmetric pulmonary edema . A curvilinear new opacity within the left mid lung , corresponds to pleural fluid layering in the fissure . Overall , aeration of the right lung base appears improved . Postoperative enlargement of the mediastinal contours appears slightly decreased from prior examination . The heart size remains large . Median sternotomy wires appear intact . Surgical clips are again visualized in the region of the aortic arch and in the left axilla .
    OUTPUT:
    
Overall decreased pulmonary edema and likely smaller bilateral pleural effusions .