颅骨膜血窦是一种罕见的血管畸形，颅内与颅外血液循环借扩张的颅骨板障静脉形成异常交通。

Sinus pericranii is a rare vascular anomaly involving an abnormal communication between the intracranial and extracranial circulations through dilated diploic veins of the skull.

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论颅内软骨瘤由不典型的软骨细胞组成，超微结构检查显示其来源于软骨骨膜内残留的骨祖细胞。

Conclusion The ultrastructure characteristics support that the origin of intracranial chondroma is brephic embryonic rest of osteoprogenitor cells in the basicranial periost.

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结论，骨膜下脓疡可能导致许多并发症，例如：视力丧失、髓炎、棉窦栓塞及颅内感染和脓疡。

Conclusion: Subperiosteal abscess of orbit can result in multiple complications such as loss of vision, osteomyelitis, cavernous sinus thrombosis, intracranial infection and abscess.

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