Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and multiple mediastinal clips are noted . There is mild interstitial pulmonary edema . No large effusion or pneumothorax . No convincing signs of pneumonia . The heart size is mildly enlarged . The mediastinal contour appears normal . Bony structures appear intact .
    OUTPUT:
    
Mild interstitial edema , mild cardiomegaly .