The authors reported two cases of laryngeal and tracheal stenosis who were cured completely by a long-term intubation of a microporous EPTFE (teflon) tube and a T-shaped silicone tube. In one case, a cuffed cannula was used in the long term for controlling respiration by mechanical ventilator. Subsequently, tracheal stenosis occurred. In the other case, emergency tracheotomy was done on suspicion of the foreign body in the respiratory tract. Subsequently, laryngeal stenosis occurred. At the time of admission to our hospital they were in worse physical conditions caused by tracheal and laryngeal stenosis. However, we could treat them completely and safely without any trouble. They are living comfortably without any respiratory trouble. The authors stress that laryngeal and tracheal stenosis can be treated more easily, safely and successfully by the conservative manipulation. The conservative treatment will be more and more applicable for various patients with severe respiratory distress caused by stenosis of the inferior respiratory tract.
