Neurology:扩大血管周围间隙内的豆纹动脉夹层

2022-04-13 “脑血管病及重症文献导读”公众号 “脑血管病及重症文献导读”公众号

血肿位于10年前偶然发现的扩大的血管周围间隙(PVS)内。怀疑PVS内的豆纹动脉创伤性夹层是缺血性和出血事件的原因。

33岁,女性。

因头部外伤后右侧偏瘫入院。

脑部MRI显示左侧豆纹动脉分布区区域出现急性缺血性卒中,并伴有脑实质血肿(图1)。血肿位于10年前偶然发现的扩大的血管周围间隙(PVS)内。怀疑PVS内的豆纹动脉创伤性夹层是缺血性和出血事件的原因(图1)。

图1.创伤10年前的影像(A和B)和创伤后入院立即进行的MRI影像(C和D)。TOF影像显示扩大的血管周围间隙,豆纹动脉位于中心(A图,箭头)。创伤后影像显示PVS内出血(C图,Flair)和尾状核缺血(D图):

2个月后观察到血肿吸收,PVS和豆纹动脉消失(图2)。在扩大的PVS内,豆纹动脉的过度牵拉(Excessive mobility)可以解释本例创伤性夹层。

图2.2个月后DSA(A)可见豆纹动脉消失(A,B,箭头)。TOF和T2序列(B和C)可见PVS和血肿皱缩(shrinkage):

原始出处:

Paul Janvier, Basile Kerleroux, David Varlan, et al. Teaching NeuroImage: Traumatic Dissection of Lenticulostriate Arteries Within an Enlarged Perivascular Space. Neurology. 2022 Mar 1;98(9):e978-e980. doi: 10.1212/WNL.0000000000013185. Epub 2021 Dec 8.

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