Takigawa Tomoji, Matsumaru Yuji, Hayakawa Mikito, Fukuhara Noriaki, Usui Masaaki, Matsumura Akira
Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan.
Neurol Med Chir (Tokyo). 2010;50(6):475-8. doi: 10.2176/nmc.50.475.
A 41-year-old woman presented with progressive hemianopsia caused by compression of the lateral geniculate body by the dilated basal vein draining a contralateral frontal arteriovenous malformation (AVM). Magnetic resonance (MR) imaging revealed left frontal AVM and right lateral geniculate body compression due to the dilated basal vein. Emergent presurgical transarterial embolization and surgical removal were performed. Left hemianopsia completely recovered 3 months after surgery and MR imaging indicated improvement of the compression of the lateral geniculate body. Direct mechanical compression of the enlarged drainage vein is one of the causes of homonymous hemianopsia. Early surgical treatment is recommended to obtain a rapid recovery.
一名41岁女性因引流对侧额叶动静脉畸形（AVM）的扩张基底静脉压迫外侧膝状体而出现进行性偏盲。磁共振（MR）成像显示左侧额叶AVM以及由于基底静脉扩张导致右侧外侧膝状体受压。进行了急诊术前经动脉栓塞和手术切除。术后3个月左侧偏盲完全恢复，MR成像显示外侧膝状体受压情况有所改善。扩张引流静脉的直接机械压迫是同向性偏盲的原因之一。建议早期手术治疗以实现快速恢复。
