Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Postoperative mediastinum with median sternotomy wires and clips are unchanged . Aortic valve replacement is again seen . Massive cardiomegaly is unchanged with particularly prominent enlargement of the atria bilaterally as well as prominent enlargement of the pulmonary arteries indicative of chronic pulmonary arterial hypertension . There is mild interstitial pulmonary edema . Lungs are otherwise grossly clear . There is no pleural effusion or pneumothorax . Large gallstones project over the right upper quadrant .
    OUTPUT:
    
1 . Massive cardiomegaly and mild interstitial pulmonary edema . 2 . Cholelithiasis .