Neurovascular Center, the First Affiliated Hospital of Naval Medical University, Shanghai, 200433, China.
Neurol Sci. 2022 Nov;43(11):6601-6603. doi: 10.1007/s10072-022-06209-2. Epub 2022 Jul 6.
Developmental venous anomaly (DVA) is considered a congenital vascular anatomic variation with normal draining function. Limited cases of DVA with arteriovenous malformation (AVM) in the territory of DVA have been reported, and the etiology of de novo AVM formation remains unknown and speculative. In this case, it is continuously observed that the inappropriate radiosurgery involving the DVA draining veins led to the disruption of DVA radicles and the secondary formation of de novo AVM and hemodynamic aneurysm. This sequential process exhibited in the present case verified that outflow disturbance underlay the potential etiology of AVM formation drained by adjoining DVA. Meanwhile, it also manifested the importance of preserving the integrity of the collecting veins when treating the DVA by any means.
发育性静脉畸形（DVA）被认为是一种具有正常引流功能的先天性血管解剖变异。已有有限的病例报告显示，DVA 区域内存在动静脉畸形（AVM），而新形成的 AVM 的病因仍然未知且推测。在本病例中，持续观察到不适当的放射外科手术累及 DVA 引流静脉，导致 DVA 根的破坏和新形成的动静脉畸形和血流动力学动脉瘤。本病例中表现出的这种连续过程证实了引流的 DVA 存在流出道障碍，是导致 AVM 形成的潜在病因。同时，这也表明在通过任何手段治疗 DVA 时，保持集静脉完整性的重要性。
