Pereira Boog Gustavo Henrique, Hojaij Flávio Carneiro, Mazzaro Conchy Matheus Mychael, Bentes Renan da Silva, Akamatsu Flávia Emi, Jácomo Alfredo Luiz
Universidade de São Paulo (FMUSP), Faculdade de Medicina, São Paulo, SP, Brazil.
Universidade de São Paulo (FMUSP), Faculdade de Medicina, São Paulo, SP, Brazil.
Braz J Otorhinolaryngol. 2025 Jul;91 Suppl 1(Suppl 1):101604. doi: 10.1016/j.bjorl.2025.101604. Epub 2025 May 29.
To conduct a literature review on the relationship between the ansa cervicalis (or ansa hypoglossi) and the hypoglossal nerve, discussing this disparity in terminology, and determine which of these terms is the most suitable to identify this important nerve structure.
This is a systematic review of the literature based on studies found through a standardized search performed at the LILACS and MEDLINE/PUBMED databases; classic anatomy textbooks were also consulted.
Forty-five of the 3731 articles found in the scientific research databases were selected and six classic anatomy textbooks were included in the study. Controversies involving the ansa cervicalis were analyzed and the results clearly showed that most textbooks describe its relationship with the hypoglossal nerve as a temporal junction, with no exchange of nerve fibers. The ansa cervicalis contains fibers arising from the cervical cord, and not from the hypoglossal nerve.
The term ansa cervicalis should be chosen to name this loop of nerves. The term ansa hypoglossi is not structurally correct, and should be abandoned in medical practice, the teaching of anatomy, and in scientific publications.
Level II.
对颈袢（或舌下神经袢）与舌下神经之间的关系进行文献综述，讨论术语上的这种差异，并确定这些术语中哪一个最适合用于识别这一重要神经结构。
这是一项基于在LILACS和MEDLINE/PUBMED数据库中通过标准化检索所发现研究的文献系统综述；还查阅了经典解剖学教科书。
从科研数据库中找到的3731篇文章中选取了45篇，并纳入了6本经典解剖学教科书进行研究。对涉及颈袢的争议进行了分析，结果清楚地表明，大多数教科书将其与舌下神经的关系描述为暂时连接，无神经纤维交换。颈袢包含来自颈髓的纤维，而非来自舌下神经的纤维。
应选择“颈袢”一词来命名这个神经环。“舌下神经袢”这一术语在结构上不正确，在医学实践、解剖学教学和科学出版物中应予以摒弃。
二级。
