"T1: iso to hyperintense to muscle 1,3,6"
"T2: can vary from hypo to iso to hyperintense to muscle 3,6"
"T1C+ (Gd): homogeneous strong contrast enhancement"
"NB: Location at the base of the tongue aside, the information in this article can relate to any ectopic thyroid tissue."
Expected headings
"Signal characteristics"
"A lingual thyroid results from failure of the normal caudal migration of the thyroid from the foramen caecum down to its normal location anterior to the larynx and upper trachea. Thyroid tissue may be found anywhere along the course of the thyroglossal duct; however, complete arrest with thyroid tissue located at the base of the tongue is most common and represents 90% of all cases of ectopic thyroid 1,2. Microscopic deposits of thyroid tissue along its route of descent have been identified in up to 10% of the population, representing small amounts of tissue being 'left behind' during normal development 2."
"Following contrast administration, the entire gland demonstrates prominent, homogeneous enhancement (identical to that of the normal thyroid gland). There are occasional case reports of inhomogeneous contrast enhancement 5."