Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube projects at the upper margin of the clavicles and should be advanced for better positioning . Right internal jugular central venous line terminates in the low SVC . Right chest tube is unchanged in position . Linear opacities at the right lung base are unchanged over multiple prior radiographs , likely reflective of scarring and atelectasis . Retrocardiac opacification persists , possibly reflecting continued atelectasis . Small right pleural effusion is unchanged . Barium in the left upper quadrant and in the region of the gastroesophageal junction persists . The large mediastinal fluid collection around the GE junction is not appreciated on conventional radiographs .
    OUTPUT:
    
1 . High position of the endotracheal tube , at the upper margin of the clavicular heads , should be advanced . 2 . Unchanged position of the right chest tube and right internal jugular central venous line . 3 . Persistent retrocardiac opacification could represent atelectasis .