在有异常左锁骨下的动脉的恰好大动脉的拱门的一种情况中的 ligamentum arteriosum 的 Cardiac-MRI 示范

• 作者: Enrico Melani Francesco Paparo Gian Andrea Rollandi Giovanni De Caro Lorenzo Bacigalupo
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: DYSPHAGIA Lusoria Ligamentum arteriosum Right AORTIC ARCH
• 年，卷（期）: 2012,（5）
• 页码范围: 231-235
• 页数: 5页
• 分类号: R541.1

摘要

Right-sided aortic arch with aberrant left subclavian artery (RAA/ALSC) is the second most common mediastinal complete vascular ring. Adult presentation of dysphagia lusoria due to a RAA/ALSC is uncommon with fewer than 25 cases reported in the world literature. The left lateral portion of this vascular ring is not a vessel, but an atretic ductus arteriosus, the ligamentum arteriosum, which has been identified in different cases as the major cause of tracheo-esophageal impingement. Surgical division of the ligamentum arteriosum allows the vessels to assume a less constricting pattern decreasing dysphagic symptoms. Clear visualization of the ligamentum arteriosum by diagnostic imaging has not been obtained in previously reported cases. We demonstrated, using magnetic resonance imaging, the location and the complete course of a left-sided ligamentum arteriosum in a patient with adult-onset dysphagia due to a RAA/ALSC with a small Kommerell’ s diverticulum, providing, during the same session, a complete assessment of both mediastinal vascular abnormalities and esophageal impingement sites.