Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The pulmonary artery catheter appears appropriately placed with its tip within the mediastinal borders . The left - sided dual - lead cardiac device appears intact and unchanged in position . Stable lung volumes , mild pulmonary edema , and cardiomegaly . No pleural effusion or pneumothorax .
    OUTPUT:
    
Appropriately positioned pulmonary artery catheter . Otherwise , no significant change from the prior exam .