A Case of Posterior Circulation Embolism Due to a Subtype of Bow Hunter's Syndrome Diagnosed by Non-Invasive Examination

Autor: Chikako Sato, Yuto Uchida, Taro Kitamura, Noriyuki Matsukawa, Masahiro Muto, Hiroyasu Inoue, Yuya Kano, Toshiyasu Miura, Kentaro Yamada, Keita Sakurai
Rok vydání: 2022
Předmět:
Zdroj: Journal of Stroke and Cerebrovascular Diseases. 31:106178
ISSN: 1052-3057
DOI: 10.1016/j.jstrokecerebrovasdis.2021.106178
Popis: Bow hunter's syndrome is the mechanical compression of the vertebral artery due to cervical rotation, resulting in ischemic symptoms in the vertebrobasilar artery territory. However, some cases present without typical symptoms and exhibit compression of the non-dominant side of the vertebral artery. We encountered a case of posterior circulation embolism due to a subtype of bow hunter's syndrome in a 74-year-old man. Although the right vertebral artery was not visualized on time-of-flight magnetic resonance angiography in the neutral position, duplex ultrasonography and time-of-flight magnetic resonance angiography in the left cervical rotation position showed blood flow in the right vertebral artery. In this case, blood flow in the contralateral vertebral artery was normal, and typical bow hunter's syndrome symptoms did not occur. In a case of posterior circulation embolism with undetermined etiology, wherein the routine duplex ultrasonography and time-of-flight magnetic resonance angiography results were inconclusive, additional testing with head positioning led to the diagnosis of a subtype of bow hunter's syndrome.
Databáze: OpenAIRE
Externí odkaz: