Hazarika P, Siddiqui S A, Pujary K, Shah P, Nayak D R, Balakrishnan R
Department of Otolaryngology, Kasturba Medical College, Manipal, India.
J Laryngol Otol. 1998 Apr;112(4):393-5. doi: 10.1017/s0022215100140563.
Ectopic thyroid is an uncommon embryological aberration characterized by the presence of thyroid tissue at a site other than in its usual pretracheal region. Usually it occurs along the path of descent of the developing thyroid primodium from the foramen caecum, commonest being lingual followed by sublingual and in the anterior midline of neck at, or below, the level of the hyoid bone. It is unusual for lingual thyroid to present simultaneously with another ectopic thyroid; reported here are two such cases.
异位甲状腺是一种罕见的胚胎发育异常，其特征是甲状腺组织出现在正常气管前区域以外的部位。通常它沿着发育中的甲状腺原基从盲孔下降的路径出现，最常见的是舌部，其次是舌下，以及舌骨水平或其下方的颈部前中线。舌甲状腺与另一个异位甲状腺同时出现的情况并不常见；本文报告了两例这样的病例。
