title: Radioactive iodine-131 therapy in the management of ectopic thyroid tissue.
abstract: The occurrence of ectopic lingual thyroid tissue was first reported over 100 years ago. We report an unusual presentation of ectopic thyroid tissue occurring in the submental area. A 27-year-old female presented to the Sultan Qaboos University Hospital in Muscat, Oman, in October 2011 with an 8 × 6 cm mass which caused difficulty in talking and a feeling of heaviness in the jaw. She was clinically and biochemically euthyroid upon presentation. The clinical diagnosis was confirmed by a technetium(-99m) thyroid scan, magnetic resonance imaging and fine needle aspiration. A single dose of 976 megabecquerels of radioactive iodine-131 resulted in hypothyroidism after three months and the complete disappearance of the swelling and associated symptoms. At a two-year follow-up, the patient was healthy and continuing lifelong replacement therapy with thyroxine.
authors.affiliation: Departments of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Omayma T
authors.initials: OT
authors.lastname: El-Shafie
authors.affiliation: Radiology & Molecular Imaging, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Samir
authors.initials: S
authors.lastname: Hussain
authors.affiliation: Radiology & Molecular Imaging, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Dilip
authors.initials: D
authors.lastname: Sankhla
authors.affiliation: Departments of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Woodhouse
keywords: Case Report; Ectopic Thyroid; Fine Needle Aspiration; Iodine Radioisotopes, therapeutic use; Oman; Thyroglossal Cyst; Thyroid, abnormalities