Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube has been advanced in the interim and the tip now is 6 .8 cm above the carina at the thoracic inlet . The right IJ approach Swan - Ganz catheter is likely situated at the main pulmonary artery . Remaining support and monitoring devices including bilateral chest tubes , enteric tube , and a mediastinal drainage catheter are unchanged . Median sternotomy wires are again noted . There has been interval increased collapse at the left lung base with obscuration of the left hemidiaphragm and volume loss . The right lung is essentially clear . No large pneumothorax identified .
    OUTPUT:
    
1 . Tip of the ET tube now situated 6 .8 cm above the carina at the thoracic inlet . 2 . Right IJ approach Swan - Ganz catheter likely at the main pulmonary artery . Remaining support and monitoring devices are unchanged . 3 . Interval increased volume loss and collapse of the left lower lobe .