title: Dual thyroid ectopia.
abstract: Ectopic thyroid gland is a rare embryological fault of thyroid development. Dual ectopic thyroid is even more rare and only 8 cases have been reported in the literature. The author presents a case of dual ectopic thyroid in a 16-year-old boy with an anterior neck mass, which is gradually growing in size particularly in the last 2 years. The initial diagnosis was thyroglossal duct cyst. Thyroid function test revealed elevated thyroid-stimulating hormone. Ultrasound of the neck did not show thyroid gland in its normal pretracheal position. Thyroid scan (Technetium 99) revealed the diagnosis of dual thyroid ectopia (lingual and subhyoid).
authors.affiliation: Department of Surgery (37), College of Medicine, PO Box 2925, Riyadh 11461, Kingdom of Saudi Arabia.
authors.forename: Mohammed H
authors.initials: MH
authors.lastname: Al-Akeely
mesh_terms: D000293:Adolescent; D002828:Choristoma / Q000175:diagnosis* / Q000188:drug therapy; D006042:Goiter / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D008297:Male; D009333:Neck / Q000000981:diagnostic imaging; D011859:Radiography; D013667:Technetium; D013961:Thyroid Gland; D013972:Thyrotropin / Q000097:blood; D013974:Thyroxine / Q000097:blood / Q000627:therapeutic use; D016896:Treatment Outcome; D014284:Triiodothyronine / Q000097:blood; D014463:Ultrasonography
chemical_list: D014284:Triiodothyronine; D013667:Technetium; D013972:Thyrotropin; D013974:Thyroxine