Thyroid dysgenesis thyroid gland may be located anywhere along the path of the descent of the thyroid during its embryological development, although it is most commonly located at the base of the tongue, just posterior to the foramen cecum of the tongue. In this location, an aberrant or ectopic thyroid gland is known as a "lingual thyroid". If the thyroid fails to descend to even higher degree, then the resulting final resting point of the thyroid gland may be high in the neck, such as just below the hyoid bone. Parts of ectopic thyroid tissue ("accessory thyroid tissue") can also occur, and
Computed tomography of the thyroid enlargement, and calcifications. Management of ITNs depends on several factors including nodule size, patient’s age, overall health status, and the presence or absence of suspicious features such as lymphadenopathy and/or invasion of adjacent structures. A CT scan provides additional important information regarding the local extension of cancer or presence of mass effect, and is useful in evaluating recurrent disease. Furthermore, CT examination plays a crucial role in preoperative evaluation and preoperative surgical planning for patients with symptomatic goiter. Computed tomography of the thyroid In CT scan of the thyroid, focal and diffuse thyroid abnormalities are commonly encountered. These findings can