Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and prosthetic cardiac valves are seen as well as mediastinal clips . There is mild pulmonary edema , minimally increased from that seen previously . No large effusions are seen . The heart remains mildly enlarged . Aortic calcifications are noted . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Pulmonary edema , slightly increased compared with prior radiograph . Mild cardiomegaly unchanged .