Discussion of Tracheal stenosis
- Acquired tracheal stenosis is usually caused by intubation or tracheostomy.
- Inflammation and pressure necrosis of the tracheal mucosa most commonly occur at either the tracheostomy stoma or at the level of the tube balloon
- The stenosis is typically 1.5-2.5 cm in length.
- Acute postintubation stenosis results from mucosal edema or granulation tissue.
- In patients with chronic stricture, tracheomalacia may result from weakness of tracheal cartilage and can be a cause of dyspnea.
 Imaging Findings for Tracheal stenosis
- On CT, this condition may be seen as eccentric or concentric soft-tissue thickening internal to normal-appearing tracheal cartilage.
- The outer tracheal wall has a normal appearance without evidence of deformity or narrowing.
- Expiratory CT shows little change in tracheal diameter.
 See Also
 External Links
 References for Tracheal stenosis
- Webb, Emily M., Elicker, Brett M., Webb, W. Richard. Using CT to Diagnose Nonneoplastic Tracheal Abnormalities: Appearanceof the Tracheal Wall. Am. J. Roentgenol. 2000 174: 1315-1321.