case_images: PMC5559925_01
case_images: A 72-year-old-female patient with a symptomatic carotid stenosis. Axial computed tomography images demonstrate: (a) absence of the thyroid in its physiological localization (yellow arrowhead), (b and c) lingual and suprahyoid thyroid (yellow arrowheads). Volume rendering and multiplanar reformations images demonstrate: (d-f) the suprahyoid location of both foci of ectopic thyroid tissue in the tongue base (white arrow) and just above the course of geniohyoid muscle (yellow arrow) and the severe reduction of the oropharynx caliber (yellow arrowhead).
case_images: JCIS-7-30-g003.jpg
case_images: PMC5559925_01_JCIS-7-30-g003.jpg
case_images: F2
case_images: Finally, CT angiography revealed the absence of thyroid tissue in its normal position [Figure 2].
case_images: A 72-year-old female patient with a symptomatic carotid stenosis. Ultrasound examination showed: (a and b) Soft-tissue mass, vascularized, with sonographic findings suggestive of thyroid tissue, located just above the geniohyoid muscle in the sublingual and suprahyoid space. (c) With convex-array scanner, in more cranial and posterior position, at the level of the tongue base, there is a hypoechoic oval mass indicate a lingual thyroid.
case_images: JCIS-7-30-g004.jpg
case_images: PMC5559925_01_JCIS-7-30-g004.jpg
case_images: F3