Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study ___ ___ . A tracheostomy cannula is seen in place apparently to substitute for the previously present ETT . The cannula is in appropriate position , terminating in the trachea some 4 cm above the level of the carina . No pneumothorax is seen . NG tube is identified , seen to pass well below the diaphragm and through the stomach with its distal end , assuming the curvature of the pancreas head , terminating in the proximal jejunum . This appears to be in similar position as a tube identified on ___ , although its distal termination is not completely identified in the previous examination .
    OUTPUT:
    
OG tube reaching proximal jejunum . No significant changes in chest finding , short of conversion from ETT to tracheostomy with cannula .