脊髓蛛网膜下腔ncc应列入脊髓硬膜下囊肿的鉴别诊断，因为这病变可能会以原发形式存在。
Spinal subarachnoid NCC should be added to the differential diagnosis of primary spinal intradural cysts, because this lesion can occur primarily.
发生于大脑导水管的囊肿、起源于颅骨板障并延伸至颅内的巨大囊肿、以及椎管内硬膜下囊肿都有报道。
Cases of cerebral aqueduct cyst, gigantic cyst arising from the diploe of cranial bones with intracranial extension, and intradural spinal hydatid cysts have been reported.
结果椎管内硬膜外蛛网膜囊肿4例，骶管内蛛网膜囊肿4 2例，神经鞘膜囊肿10例，椎管内硬膜下蛛网膜囊肿3例。
Results On MRI, extradural arachnoid cyst was demonstrated in 4, sacral arachnoid cyst in 42, extradural arachnoid neurilemma cyst in 10 and spinal subdural arachnoid cyst in 3 cases.
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