Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An enteric tube courses below the diaphragm with the tip of the field of view . The patient is status post a median sternotomy and aortic valve replacement . Mild pulmonary edema has slightly worsened since the prior exam . There is no focal opacity to suggest a new pneumonia . There is no definite pleural effusion . No pneumothorax . Moderate cardiomegaly and atherosclerotic calcifications of the aortic arch are unchanged .
    OUTPUT:
    
Mild pulmonary edema , slightly worse since prior exam . No definite evidence of pneumonia .