椎体旁及椎管内硬膜外脓肿5例；

There were the paraspinal abscess and epidural abscess in 5 cases.

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目的：分析椎管内硬膜外囊肿的影像学表现。

Purpose:To analysis CT and MRI manifestations of spinal extradural cyst(SEC).

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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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