Saber-sheath trachea
Appearance
![](https://cdn.statically.io/img/upload.wikimedia.org/wikipedia/commons/thumb/2/27/Saebelscheidentrachea_bei_COPD_67M_-_CT_axial_und_paracoronar_-_001.jpg/220px-Saebelscheidentrachea_bei_COPD_67M_-_CT_axial_und_paracoronar_-_001.jpg)
A saber-sheath trachea also known as scabbard trachea is a trachea that has an abnormal shape. The posterior area of the trachea increases in diameter while the lateral measurement decreases.
Causes
[edit]It can occur in chronic obstructive pulmonary disease or prolonged bilateral compression on it as in goitre.
References
[edit]- Mosby's Medical, Nursing, & Allied Health Dictionary. Edition 5, 1998 p7B48.