Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild pulmonary edema is unchanged . No new focal opacity . Previously seen left upper lung bulla is unchanged . No evidence of pneumothorax . No pleural effusion . Severe cardiomegaly is unchanged . Dense aortic calcifications and an old right rib fracture are again noted .
    OUTPUT:
    
Unchanged mild pulmonary edema . No pneumothorax or other new acute abnormality .