Saber-sheath trachea
# Saber-sheath trachea

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

It can occur in chronic obstructive pulmonary disease or prolonged bilateral compression on it as in goitre.

