Thyroid vein

Thyroid Vein

The thyroid veins.

The Thyroid Vein refers to a group of veins in the neck that drain the thyroid gland and the adjacent structures. These veins are classified into three types: the superior, middle, and inferior thyroid veins.

Superior Thyroid Vein

The Superior Thyroid Vein originates from the upper part of the thyroid gland and follows the same course as the superior thyroid artery. It drains into the internal jugular vein.

Middle Thyroid Vein

The Middle Thyroid Vein drains the lateral part of the thyroid gland. It runs horizontally across the neck and drains directly into the internal jugular vein.

Inferior Thyroid Vein

The Inferior Thyroid Vein originates from the lower part of the thyroid gland and drains into the brachiocephalic vein. Unlike the superior and middle thyroid veins, it does not follow the course of a corresponding artery.

Clinical Significance

Knowledge of the thyroid veins is crucial in surgeries involving the thyroid gland. Damage to these veins during surgery can lead to significant bleeding. Moreover, enlargement of these veins can indicate thyroid disease.

See Also

• Thyroid gland
• Thyroid arteries
• Internal jugular vein
• Brachiocephalic vein