室管膜下瘤（Subependymoma）较为罕见的良性肿瘤40～60岁好发，大多无症状，晚期致梗阻性脑积水。部位：好发于双侧脑室前角和体部，延髓下部者可突入四脑室。
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Objective To summarize the clinical characteristics and treatment of spinal cord subependymoma.
目的总结脊髓室管膜下瘤的临床特点和治疗方法。
参考来源 - 脊髓室管膜下瘤诊断和显微外科治疗·2,447,543篇论文数据，部分数据来源于NoteExpress
由于四脑室的室管膜下瘤更容易出现钙化，增强扫描多有强化，其诊断更具有挑战性。
Because fourth ventricular subependymomas can have calcification and contrast enhancement more typical of ependymomas, diagnostic imaging is more challenging.
室管膜下巨细胞瘤常常钙化，在CT和MR上均不均匀。增强检查明显强化但是不均匀。
Subependymal giant cell tumors are frequently calcified, appear heterogeneous on CT and MR scans, and show intense but inhomogeneous enhancement following contrast administration.
室管膜下巨细胞星形细胞瘤均位于莫氏孔区这一特定的解剖部位，这一肿瘤常有强化，而且肿瘤逐渐增长。
Some features of subependymal grant cell astrocytoma were their anatomy location at or near the fomina of Morno, tumor enhancement and mass growth continuously.
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