Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes . There is mild interstitial pulmonary edema . The lungs are otherwise clear . Moderate cardiomegaly is unchanged from the prior examination . There is no pneumothorax or large pleural effusion . The sternotomy wires are intact . The hemodialysis catheter terminates within the right atrium .
    OUTPUT:
    
1 . Mild interstitial pulmonary edema with moderate but stable cardiomegaly . 2 . No evidence of pneumonia .