藏毛窦是一种骶尾部区常见的的慢性疾病。
Pilonidal sinus is a common chronic disease of the sacrococcygeal region.
目的：确定腰骶神经根的感觉分布区。
Objective: To make definitely the sensory distribution area of lumbosacral nerve roots.
室管膜瘤很少见于中枢神经系统之外，假如有的话，主要见于骶尾部或骶前区。
Ependymomas rarely occur outside the CNS. Of those that do, the majority are in the sacrococcygeal or presacral areas.
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