Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evaluation is limited by underlying board and supine positioning . The second radiograph demonstrates ET tube within the right main stem bronchus . Lung volumes are low with mild pulmonary edema . No large pneumothorax is identified on this supine radiograph . There is severe cardiomegaly . The patient is status post median sternotomy with fracture of the second and fourth median sternotomy wires . Epicardial pacing wires are noted . There is gaseous distention of the stomach , partially imaged .
    OUTPUT:
    
Endotracheal tube within the right main stem bronchus . Pulmonary edema with severe cardiomegaly . Findings regarding ETT discussed with Dr . ___ at 4 :20 p .m . , ___ .