Refers to a ridge of cartilage in the trachea that occurs between the division of the two main bronchi.

It occurs at the lower end of the trachea.

It is usually at the level of the 4th thoracic vertebra, which is in line with the sternal angle, but may raise or descend up to two vertebrae higher or lower with breathing.

1681cates carcinoma of the lymph nodes around the region where the trachea divides.

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