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 mediastinal clips are noted . The heart is moderately enlarged . There is mild interstitial edema without lobar consolidation , effusion , or pneumothorax . The mediastinal contour appears somewhat prominent , likely due to an unfolded thoracic aorta with linear calcification along the ascending aorta . The imaged osseous structures are intact , though note is made of an old right mid clavicular shaft deformity
    OUTPUT:
    
Mild edema and cardiomegaly .