Nayate Ameya
University Hospitals of Cleveland, 11100 Euclid Avenue, Cleveland, OH 44106, USA.
Radiol Case Rep. 2020 May 4;15(7):921-925. doi: 10.1016/j.radcr.2020.04.005. eCollection 2020 Jul.
Benign enhancing lesions at the foramen magnum is a recently described entity and believed to represent a varix or ganglion. These lesions are typically described as being single, located posterior to the intradural vertebral artery, and not attached to the dura. These 2 cases demonstrate previously undescribed variations in appearance of these lesions including contacting the posterior inferior cerebellar artery and lateral epidural plexus/dura, segmental dilatations, transverse and linear configuration, and visualization on an unenhanced CT head. These lesions most likely reflect bridging veins and are structures that clinicians should be aware of to avoid unnecessary follow-up or surgical intervention.
枕大孔区的良性强化病变是一种最近才被描述的实体，被认为代表静脉瘤或神经节。这些病变通常被描述为单个，位于硬脊膜内椎动脉后方，且不附着于硬脑膜。这2例病例展示了这些病变以前未被描述的外观变化，包括与小脑后下动脉及外侧硬膜外丛/硬脑膜接触、节段性扩张、横向和线性形态，以及在未增强的头颅CT上显影。这些病变很可能反映桥静脉，是临床医生应知晓的结构，以避免不必要的随访或手术干预。
