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 valve are redemonstrated . The heart is mildly enlarged with no focal consolidation , effusion , or pneumothorax . There is no overt edema , though there may be mild cephalization to suggest mild interstitial congestion . The mediastinal contour is stable with atherosclerotic calcifications along the aortic knob . The bony structures are intact . There is a tiny left pleural effusion noted .
    OUTPUT:
    
Mild cardiomegaly with mild interstitial edema and tiny left pleural effusion .