Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Korea.
Clin Exp Otorhinolaryngol. 2009 Sep;2(3):155-8. doi: 10.3342/ceo.2009.2.3.155. Epub 2009 Sep 23.
Ectopic thyroid tissue is an uncommon embryologic aberration characterized by the presence of thyroid tissue in a site other than its usual pre-tracheal location. Single ectopic thyroid tissue is the most common variant, and the base of the tongue is the most frequent ectopic location. Dual ectopic thyroid is extremely rare, and only eleven cases have been reported in the English literature. Furthermore, adenomatous hyperplasia has never been reported to arise from dual ectopic thyroid. There has been only one reported case of adenomatous hyperplasia arising from a single intratracheal ectopic thyroid. We report a case of adenomatous hyperplasia arising from dual ectopic thyroid tissue that presented as a sublingual mass in a 37-yr-old woman. The diagnosis was made through pathologic examination after surgical resection. We also discuss the diagnosis and treatment of ectopic thyroid, along with a review of the literature.
甲状腺组织异位是一种罕见的胚胎发育异常，其特征是甲状腺组织出现在通常位于气管前的位置以外的部位。单发甲状腺组织异位是最常见的变异类型，而舌根部是最常见的异位部位。双发性甲状腺组织异位极为罕见，英文文献中仅报道了 11 例。此外，从未有报道称双发性甲状腺组织异位会导致腺瘤性增生。仅有一例报道称，单发气管内异位甲状腺会导致腺瘤性增生。我们报告了一例 37 岁女性因舌下肿块就诊的双发性甲状腺组织异位性腺瘤性增生病例。通过手术切除后的病理检查做出了诊断。我们还讨论了异位甲状腺的诊断和治疗，并对文献进行了回顾。
