Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and aortic valve replacement unchanged . Left chest wall pacer device is again seen with leads extending to the region the right atrium and right ventricle . Mitral annular calcification is also noted . The heart remains stably enlarged though the right heart border is not clearly assessed given elevation of the right hemidiaphragm . The hila appear slightly congested though there is no overt edema . No focal consolidation , large effusion or pneumothorax is seen . The relative elevation of the right hemidiaphragm is unchanged . Mediastinal contour is stable . No acute bony abnormality . Old left upper rib deformities noted .
    OUTPUT:
    
Stable elevation of the right hemidiaphragm . Stable cardiomegaly . Mild congestion .