它由星形细胞瘤，少突胶质细胞瘤，室管膜瘤发展而来，它们是由神经外胚层细胞诱导的。
It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.
室管膜瘤和脑膜瘤内常可见钙化。
Intracranial calcification is frequently seen in ependymomas and meningiomas.
目的：讨论室管膜瘤病理形态特征。
Purpose: To investigate the clinicopathologic characteristic of ependymoma.
发生在脑干之上第四脑室室管膜的室管膜瘤。
Here is an ependymoma arising from the ependymal lining of the fourth ventricle above the brainstem and bulging toward the cerebellum.
目的：提高室管膜瘤的CT及MRI诊断水平。
Objective:To improve the diagnostic level of CT and MRI in ependymoma.
其次，常见的原因还有肿瘤尤其是室管膜瘤的出血。
The next most common cause is the bleeding tumour and especially ependymomas.
依据肿瘤分化程度，可分为分化型和间变型室管膜瘤。
According to the de-gree of differentiation, the tumor could be divided into typical ependymoma and anaplastic ependymoma.
目的：探讨圆锥马尾部室管膜瘤的诊断及手术治疗特点。
Aim: To study the diagnosis and treatment of ependymoma in conus medullaris and cauda equins.
GFAP阴性不支持室管膜瘤，而EMA阴性不支持脑膜瘤。
GFAP being negative does not support ependymoma, and EMA being negative does not support meningioma.
结论：儿童第四脑室肿瘤以髓母细胞瘤最多见，其次为室管膜瘤。
CONCLUSION: Medulloblastoma accounts for the main part of the fourth ventricular tumors in children while the second commonly seen tumor is ependymoma.
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。
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.
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。
Ependymomas rarely occur outside the CNS. Of those that do, the majority are in the sacrococcygeal or presacral areas.
结果四脑室肿瘤以髓母细胞瘤、室管膜瘤和星形胶质瘤多见，肿瘤与发病年龄关系密切。
Results the most common neoplasms were medulloblastoma and ependymoma and astrocytoma in the fourth ventricular. Some tumors had specific patients age.
目的：观察一少见的特殊类型室管膜瘤的临床病理特点，拟译名为伸展细胞型室管膜瘤。
Purpose To investigate the clinicopathological features of a rare type of ependymoma, termed tanycytic ependymoma.
儿童后颅窝肿块包括青少年毛细胞星形细胞瘤、室管膜瘤、髓母细胞瘤、脑干神经胶质瘤。
The differential for a posterior fossa mass in children includes juvenile pilocytic astrocytoma, medulloblastoma, ependymoma, and brainstem glioma.
目的探讨脊髓血管网织细胞瘤的临床和影像特征以及脊髓血管畸形、室管膜瘤的区别对诊断的意义。
Objective to make a correct diagnosis of hemangioblastoma spinal cord by realizing clinic-photographic feature and differentiation with AVM and ependymoma.
目的探讨小儿后颅窝肿瘤中最常见的髓母细胞瘤和室管膜瘤的CT诊断及误诊原因，提高诊断正确率。
Objective To study the Easily Mistaken Causes of CT on medulloblastoma and ependymoma in children and improve the accuracy of the diagnosis.
患者可有中枢神经系统或周围神经系统的肿瘤病变，包括许旺氏细胞瘤、脑膜瘤、室管膜瘤、胶质瘤、神经纤维瘤等。
Affected individuals develop tumors of the central and peripheral nervous system, including schwannomas (typically of the vestibulum), meningiomas, ependymoma, gliomas, and neurofibromas.
而32例脑内胶质细胞瘤，包括星形细胞瘤21例、少支胶质细胞瘤4例、幕上室管膜瘤7例均未显示脑皮质内移征。
But the sign can not be found in all 32 cases with intra-cerebral glioma, including 21 cases with astrocytoma and 4 cases with oligodendroglioma and 7 cases with ependymoma above cerebellar tentorium.
网状细胞染色考虑许旺氏细胞瘤可能性大于脑膜瘤或室管膜瘤，超过50%的许旺氏细胞瘤在网状细胞染色时可见胞质淡染。
Reticulin staining (c) is more consistent with schwannoma than either meningioma or ependymoma. Reticulin staining was found to be strong in greater than 50% of the tumor.
结果：星形细胞瘤15例，单发转移性肿瘤10例，血管母细胞瘤8例，髓母细胞瘤6例，恶性淋巴瘤2例，室管膜瘤1例。
Results:Among them, 15 astrocytomas, 10 solitary intracranial metastatic tumors, 8 hemangioblastomas, 6 medulloblastomas, 2 lymphomas and 1 ependymoma.
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.
生前暴露与高或低级别星型细胞瘤、室管膜细胞瘤、生殖细胞瘤或是其他少见的尚未明确分类的肿瘤的发病风险没有关系。
Prenatal exposure was not associated with risk of high - or low-grade astrocytoma, ependymoma, germ cell tumor, or other rare or incompletely specified tumors.
但椎管内神经鞘膜肿瘤的MR信号变化与脊膜瘤和室管腆窟无法区分。
However, the changes of MR signal intensity of neurinoma are not distinguishable with those of meningioma and ependymoma in the spinal canal.
脑胶质瘤是由神经外胚叶衍化而来的胶质细胞即星形胶质细胞、少枝胶质细胞和室管膜胶质细胞等发生的肿瘤，是颅内最常见的恶性肿瘤。
Glioma is the most common type of primary intracranial tumors in human. It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.
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.
室 管膜 瘤显微镜图像显示玫瑰花 结图案，细胞围绕中央血管区域排列。
The microscopic appearance of an ependymoma reveals a rosette pattern with the cells arranged about a central vascular space.
室管膜下巨细胞星形细胞瘤2例，肾血管平滑肌脂肪瘤1例。
Subependymal giant cell astrocytomas were detected in 2 cases, renal angiomyolipoma was detected in 1 case.
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.
目的：探讨室管膜下巨细胞星形细胞瘤(SEGA)的临床病理、免疫组化特点及预后。
Purpose to study the clinicopathology, immunohistochemical characteristic and prognosis of subependymal giant cell astrocytoma (SEGA).
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