Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low bilateral lung volumes . Persisting pulmonary edema as well as a retrocardiac opacity likely reflecting atelectasis . There are increasing patchy opacities in the right lung zone , nonspecific and may reflect either pulmonary edema , infection or hemorrhage given the provided clinical history . The size of the cardiac silhouette is enlarged but unchanged . Partially evaluated left ventricular assist device . The patient is status post median sternotomy . A left transjugular dialysis catheter tip extends to the cavoatrial junction . The tip of the right PICC line extends into the right atrium . A tracheostomy tube is present . The feeding tube courses below the level the diaphragms but beyond the field of view of this radiograph .
    OUTPUT:
    
Low bilateral lung volumes and persisting pulmonary edema . Increasing opacities in the right lung zone may reflect pulmonary edema , infection , or hemorrhage given the provided clinical history .