title: Endoscope-assisted intraoral removal of ectopic thyroid tissue using a frenotomy incision.
abstract: BACKGROUND
  Ectopic thyroid tissue is a relatively rare condition and a developmental anomaly characterized by the aggregation of thyroid tissue. Usually, it occurs along the path of descent of the developing thyroid primordium from the foramen caecum, the most common being in the anterior midline of the neck at or below the level of the hyoid bone. Surgical removal of ectopic thyroid tissue is usually accomplished through an external incision in the neck. However, this procedure inevitably results in a neck scar.
  
  
  METHODS
  We report the case of a 30-year-old woman with ectopic thyroid tissue. We implemented a modified approach to ectopic thyroid tissue removal through a frenotomy incision of the mouth using an endoscope system.
  
  
  RESULTS
  A modified approach to ectopic thyroid tissue removal was used in this patient. The total operative time was 50 minutes, and the patient remains free of disease 15 months after excision.
  
  
  CONCLUSIONS
  Resection of ectopic thyroid tissue can be performed by a transoral endoscope-assisted approach through a frenotomy incision of the mouth.
authors: Department of Otolaryngology, Gyeongsang National University , Jinju, Korea.
authors: Seung Hoon
authors: SH
authors: Woo
authors: Han-Sin
authors: HS
authors: Jeong
authors: Jin Pyeong
authors: JP
authors: Kim
authors: Jung Je
authors: JJ
authors: Park
authors: Chung-Hwan
authors: CH
authors: Baek
mesh_terms: D000328:Adult; D002828:Choristoma / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D002921:Cicatrix / Q000517:prevention & control; D003680:Deglutition Disorders / Q000209:etiology; D003937:Diagnosis, Differential; D004066:Digestive System Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D016145:Endoscopy, Digestive System; D005260:Female; D006801:Humans; D006928:Hyoid Bone / Q000601:surgery; D008035:Lingual Frenum / Q000601:surgery; D009060:Mouth Floor / Q000601:surgery; D009333:Neck / Q000000981:diagnostic imaging / Q000601:surgery*; D013961:Thyroid Gland; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome