Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates in the low thoracic trachea within 2 cm of the carina , however assessment is limited due to patient rotation . Pulmonary edema is unchanged . Bilateral pleural effusions are small .
    OUTPUT:
    
An endotracheal tube terminates within 2 cm of the carina . Otherwise no substantial change since recent study from several hr earlier .