1. A technique for insertion of self-expanding tracheal and bronchial stents 
Catherine D Sudarshan, John H Dark 
The Annals of Thoracic Surgery 
Volume 67, Issue 1, Pages (January 1999)
DOI: /S (98)

2. Fig 1
The positioning of hypodermic needles on the skin to mark the proximal (A) and distal (B) ends of the stenosis.
The Annals of Thoracic Surgery  , DOI: ( /S (98) )

3. Fig 2
Radiograph made after insertion of a tracheal stent and a left bronchial sent (with needles at proximal and distal ends). Note the presence of a superior vena cava stent inserted for extrinsic compression caused by a tumor in the lymph nodes.
The Annals of Thoracic Surgery  , DOI: ( /S (98) )