The superior thyroid vein is a vessel that drains blood from the thyroid gland, located in the front of the neck. This vein plays an important role in ensuring the normal functioning of the thyroid gland. The superior thyroid vein is one of the main components of the venous system of the neck and connects the thyroid gland to the general blood flow system. It forms inside the thyroid gland and passes through the tissue of the gland to its upper edges. The vein then emerges from under the edges of the gland and connects with the left and right jugular veins.
The superior thyroid vein has many functions, including maintaining normal levels of thyroid hormones in the body, which is important for a person's metabolism and health. Insufficient supply of hormones into the bloodstream leads to the development of hypothyroidism, and excess supply of the hormone leads to hyperthyroidism. When the thyroid gland is overactive, changes occur in its tissues, which can cause thyroiditis - inflammation of the gland tissue. Impaired functioning of the superior thyroid vein is also associated with various thyroid diseases such as cancer, tuberculosis and autoimmune diseases. In such cases, blood may stagnate in the vein, which leads to