- Types:
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inferior thyroid vein
any of several veins on each side that drain the thyroid gland and empty into the innominate vein
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middle thyroid vein
a vein on each side that drains the lateral part of the thyroid and empties into the internal jugular vein
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superior thyroid vein
a vein on each side that drains the upper part of the thyroid and empties into the internal jugular vein