Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post mitral valve replacement . The patient remains intubated . The endotracheal tube terminates about 9 cm above the carina , probably at the thoracic inlet and should be advanced by about 4 cm in order to obtain more optimal positioning . An orogastric tube courses into the stomach . Left subclavian and right internal jugular venous catheters appear unchanged . The cardiac , mediastinal and hilar contours appear stable . Pulmonary edema has improved . A pleural effusion is suspected to persist on the left and there is probably also a small right - sided pleural effusion . There is no pneumothorax .
    OUTPUT:
    
1 . High - lying endotracheal tube ; advancing the tube by about 4 - 5 cm may be appropriate since it terminates about 9 cm above the carina . 2 . Improving pulmonary edema .