Aderdour L, El Fakiri M M, Tijani A, Nouri H, Raji A
Service ORL, CHU Mohammed-6, Guiliz, 40000 Marrakech, Maroc.
Rev Stomatol Chir Maxillofac. 2008 Dec;109(6):396-8. doi: 10.1016/j.stomax.2008.09.007. Epub 2008 Nov 12.
Ectopic thyroid is a rare pathology characterized by thyroid tissue, located outside of the normal area. The aim of this study was to report a case of a basilingual ectopic-thyroid goiter and to present clinical, paraclinical, and treatment aspects.
A 45-year-old woman presented with a mass located at the base of the tongue-hampering deglutition. A CT-scan revealed a tissular tumour. The biopsy proved this to be thyroid tissue. Cervical ultrasonography did not show the thyroid gland in normal location. A complete exeresis was performed by suprahyoid-surgical approach. The histopathological examination confirmed a non-malignant ectopic goiter.
The etiology of ectopic thyroid is unknown. The location is possible anywhere on the pathway used during the course of embryonal development between the base of the tongue and the normal location. Scintigraphy is the best examination to detect ectopic-thyroid tissues and to show the absence of the thyroid in its normal location. The treatment for basilinguale-ectopic thyroid is surgery. If necessary, a medical treatment is associated. The surgical approach and preoperative tracheotomy are chosen according to volume, tumoral extension, and operative risks.
异位甲状腺是一种罕见的病理情况，其特征为甲状腺组织位于正常区域之外。本研究的目的是报告一例双侧异位甲状腺肿病例，并介绍其临床、辅助检查及治疗方面的情况。
一名45岁女性因舌根部肿物导致吞咽困难前来就诊。CT扫描显示为组织性肿瘤。活检证实为甲状腺组织。颈部超声检查未发现正常位置的甲状腺。通过舌骨上手术入路进行了完整切除。组织病理学检查证实为非恶性异位甲状腺肿。
异位甲状腺的病因尚不清楚。其位置可能在胚胎发育过程中从舌根到正常位置所经过路径的任何部位。闪烁扫描是检测异位甲状腺组织并显示正常位置甲状腺缺如的最佳检查方法。双侧异位甲状腺的治疗方法是手术。如有必要，可联合药物治疗。手术入路及术前气管切开术根据肿物大小、肿瘤范围及手术风险来选择。
