跨椎管内外的哑铃形肿瘤 ,占椎管肿瘤的 6 %,通常起源于椎管内 ,多为良性肿瘤 ,神经鞘瘤占 6 0 %～ 90 %[1 ] 。手术切除中 ,术野常需向侧方扩展 ,以便暴露哑铃形肿瘤的椎管外部分。本文就有关的手术入路及操作技术进行综述。1　经钩突椎间盘入路Hakuda等首先提出经钩突椎间盘 Dumbbell shaped tumors spanning the interior and exterior of the spinal canal, accounting for 6% of spinal tumors, usually originate in the spinal canal, mostly benign tumors, and schwannoma accounts for 60% to 90% [1]. During surgical resection, the surgical field often needs to expand laterally in order to expose the extradiscal portion of the dumbbell tumor. This article reviews the relevant surgical approaches and techniques. 1 by the hook intervertebral disc approach Hakuda first proposed through the uncinate intervertebral disc