Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires are again noted . The heart is mildly enlarged . The lung volumes are low . There is mild interstitial pulmonary edema , similar in overall appearance as compared with the recent prior exam . No large effusion or pneumothorax . No convincing evidence for pneumonia . Mediastinal contour is unchanged . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly with mild interstitial pulmonary edema .