Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ central venous catheter is in the right atrium . The sternotomy wires are intact without evidence of dehiscence . The lung volume is small . Pulmonary edema has improved compared to yesterday . Bilateral atelectasis has improved slightly as well . No new consolidation . Bilateral pleural effusion is grossly unchanged . No pneumothorax . The severe cardiomegaly is unchanged .
    OUTPUT:
    
Slightly improved edema . Otherwise stable chest radiograph .