Ectopic thyroid is a rare embryological aberration which can occur in any moment of the migration of the thyroid resulting in lingual (at tongue base), sublingual (below the tongue), prelaryngeal (in front of the larynx), and substernal (in the mediastinum) ectopy. It is commonly found in the base of the tongue, just behind the foramen cecum, and is subject to the same diseases as the thyroid gland itself. The thyroid gland located at the base of the tongue is called lingual thyroid. Lingual thyroid is the most frequent ectopic location of the thyroid gland, although its prevalance varies between 1:100000 and 1:300000, it occurs more frequently in females, with a female to male ratio of 4:1. The true insidence is probably underestimated due to asymptomatic lingual tyhroids. Some Authors reported having found ectopic lingual tissue in % 10 of 200 consecutive necropsies. In the literature, approximately 400 cases of symtomatic patients have been reported
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