Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mild to moderately enlarged . The mediastinal contour is unremarkable . There is mild interstitial pulmonary edema , new in the interval . No pleural effusion or pneumothorax is seen . Retrocardiac patchy opacity likely reflects atelectasis . An IVC filter is noted within the upper abdomen , just to the right of midline .
    OUTPUT:
    
Mild pulmonary edema , new in the interval . Retrocardiac atelectasis .