Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube terminates at the level of the carina and should be withdrawn 3 cm for standard positioning . Bilateral chest tubes , mediastinal drains and an enteric tube are well positioned . A left paramedian drain is sharply angulated and should be revised if poorly functioning . Sternotomy wires are constant . Retrocardiac atelectasis is unchanged . There is no pneumothorax . Pleural effusions , if there were any before , have resolved . The cardiac silhouette is smaller in size and pulmonary edema has resolved after pericardial window formation . Postoperative appearance of the mediastinum is unchanged from yesterday .
    OUTPUT:
    
1 . Endotracheal tube should be withdrawn 3 cm for better positioning . 2 . Resolution of mild pulmonary edema and decrease in size of the cardiac silhouette after pericardial window formation .