Abstract:Background
The lingual thyroid gland is a rare clinical entity that was found to occur due to the failure of the thyroid gland to descend into its normal ectopic pretracheal position during embryogenesis. The reported incidence of lingual thyroid is 1 in 100,000, and it is more common in females, with a female:male ratio of 3:1. When located at the base of the tongue, the ectopic gland is often asymptomatic but may cause local symptoms, such as, dysphagia, dysphonia, upper airway obstruction, hemorrhage, and o… Show more
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