Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and mitral valve replacement . Moderate cardiomegaly is similar to the previous study . The mediastinal contours unchanged . Mild pulmonary edema is present . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Moderate cardiomegaly with mild pulmonary edema .