تيروييد زباني ، گزارش سه مورد و بررسي مقالات

Lingual thyroid (Report of three cases and review of literature)

Lingual thyroid is a developmental congenital abnormality with a reported incidence ranging from 1:10 to 1:100,000. It is characterized by the failure of the thyroid gland, or remnants, to descend from is embryologic site of origin of the foramen cecum to its usual pretraceal position. Clinical Presentation : We reported three patients with diagnosis of lingual thyroid during the years 1371 - 1381. One patient a 23 years old male presented with dysphangia and oral bleeding during solid ingestion from 7 year ago. Other patient a 47 years old female presented with intermit ant oral bleeding, dyspnea and snoring during sleep from 20 years ago. Third patient a 16 years old female presented with sore throat and articulation disorders from 2 months ago. Intervention : Thyroid scan with iodine 123 showed high uptake zone in the base of tongue without activity in the normal thyroid bed. The patients were operated with Tran hyoid anterior pharyngotomy approach and pathology revealed normal thyroid tissue. Conclusion : Definitive diagnosis of lingual thyroid is on based on iodine 123 thyroid scan. When the mass is causing functional impairment, suppressive doses of thyroid hormones may be sufficient; when it is not, total excision should be considered.