Dixit Daksha, Shilpa M B, Harsh M P, Ravishankar M V
Department of Anatomy, KLE University's Jawaharlal Nehru Medical College, Belgaum, Karnataka, India.
Cases J. 2009 Apr 20;2:6640. doi: 10.1186/1757-1626-0002-0000006640.
The thyroid gland, a highly vascular endocrine gland, is composed of two lateral lobes connected by a narrow median isthmus thus giving an 'H' shaped appearance to the gland. A wide range of morphological variations and developmental anomalies of the thyroid gland have been reported in the literature. In our study, on the morphometric features of the thyroid gland it was found that, 6 out of 41 thyroid glands that were dissected, showed an absence of the isthmus. The respective lateral lobes were positioned independently on either side of the trachea. The incidence of agenesis of isthmus, along with the developmental and clinical significance are discussed herein under.
甲状腺是一个血管丰富的内分泌腺，由两个侧叶通过狭窄的中间峡部相连组成，因此甲状腺呈现出“H”形外观。文献中报道了甲状腺广泛的形态变异和发育异常。在我们关于甲状腺形态计量学特征的研究中，发现解剖的41个甲状腺中有6个没有峡部。各自的侧叶独立地位于气管两侧。本文将讨论峡部发育不全的发生率以及其发育和临床意义。
