Intracranial calcification is frequently seen in ependymomas and meningiomas.

室管膜瘤和脑膜瘤内常可见钙化。

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The next most common cause is the bleeding tumour and especially ependymomas.

其次，常见的原因还有肿瘤尤其是室管膜瘤的出血。

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Ependymomas rarely occur outside the CNS. Of those that do, the majority are in the sacrococcygeal or presacral areas.

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。

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Because fourth ventricular subependymomas can have calcification and contrast enhancement more typical of ependymomas, diagnostic imaging is more challenging.

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。

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Here is an ependymoma arising from the ependymal lining of the fourth ventricle above the brainstem and bulging toward the cerebellum. Ependymomas are benign histologically.

发生在脑干之上第四脑室室管膜的室管膜瘤。组织学上，室管膜瘤是良性肿瘤。

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Here is an ependymoma arising from the ependymal lining of the fourth ventricle above the brainstem and bulging toward the cerebellum. Ependymomas are benign histologically.

发生在脑干之上第四脑室室管膜的室管膜瘤。组织学上，室管膜瘤是良性肿瘤。

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