The capillary networks were connected directly with the venous plexus by the capillaries.

毛细血管网与静脉丛之间直接以毛细血管相连。

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The structure in the triangle was the vertebral artery, muscular branches, vertebral venous plexus and C1 nerve.

枕下三角内有椎动脉及肌支，椎静脉丛和颈1神经。

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Pathogenesis is poorly understood. The most accepted route is hematogenous spread, both arterial and through Batson's venous plexus.

发病机理尚不太清楚，最为人所接受的转移路径是血源性播撒，不仅通过动脉而且通过Batsons静脉丛。

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