Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a biventricular pacemaker with leads terminating in the expected positions of the right atrium and right ventricle . Sternotomy wires are also present . There is mild cardiomegaly . The mediastinal silhouette is stable with mild widening of the aorta and mild calcification . No pulmonary edema is seen . There is no abnormality of the lung parenchyma . Mild degenerative changes are seen along the spine .
    OUTPUT:
    
Stable chest radiograph .