Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Moderate cardiomegaly has increased compared to the previous examination . The aortic knob is densely calcified . Moderate pulmonary edema is worse in the interval . More focal opacification in the right lung base could reflect an area of infection . Small right pleural effusion appears new . No pneumothorax is present . Punctate calcifications in the right apex appear unchanged . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
1 . Moderate congestive heart failure with small right pleural effusion and moderate pulmonary edema . 2 . More focal opacification in the right lung base could reflect an area of infection .