Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is in standard position , terminating approximately 6 cm from the carina . Left PICC tip terminates in the upper SVC . No other central venous catheter is identified . There is complete opacification of the left hemithorax with leftward mediastinal shift , compatible with bronchial obstruction and collapse of the left lung . Emphysematous changes are noted in the right lung , without focal consolidation . No pneumothorax . Marked gaseous distention of the stomach is seen , with a biliary stent partially visualized in the right upper quadrant .
    OUTPUT:
    
1 . Complete opacification of left hemithorax with leftward shift of mediastinal structures compatible with post-obstructive atelectasis of the left lung . 2 . Left PICC tip terminates in the upper SVC . No other central venous catheter is identified . No pneumothorax .