كليدواژه :
پزشكي , تيروييد زباني , اسكن تيروييد , Thyroid Scan , Lingual Thyroid , The Base of Tongue
چكيده لاتين :
Background: Lingual thyroid is a developmental congenital abnormality with a reported
incidence ranging from 1: 10 to 1: 100,000. It is charactrized by the failure of the thyroid gland, or
remnants, to descend form its embryologic site of origin of the foramen cecum to its usual
pretracheal position.
Clinical Presentation: We reported three patients with diagnosis of lingual thyroid during
the years 1371-1381. One patient, a 23-year-old male, presented with dysphagia and oral bleeding
during solid ingestion form 7 years ago. An other patient, a 47-year-old female, presented with
intermittant oral bleeding, dyspnea, and snoring during sleep from 20 years ago. The third patient,
a 16-year-old female, presented with sore throat and articulation disorders from 2 months ago.
Intervention: Thyroid scan with iodine 123 showed high uptake zone at the base of tongue
without activity in the normal thyroid bed. The patients were operated with transhyoid anterior
pharyngotomy approach, and pathology revealed normal thyroid tissue.
Conclusion: Definitive diagnosis of lingual thyroid is 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.
