CTR is a surgery in which the narrowed part of the airway just below the voice box (larynx) is removed and the voice box and windpipe (trachea) are sewn back together. It is also used to treat other airway problems.
Depending on where the narrowing is, this may be done as a single stage (one step) surgery or a staged (multiple step) surgery.
If your child has a tracheotomy tube, it would be removed in the single stage.
In the staged surgery, a stent would be placed above the tracheotomy tube.