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.
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.
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.
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.
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.
椎管肿瘤常见的是星形细胞瘤(17.8%)、室管膜肿瘤和脂肪瘤(均为15.6%)。
The common entities of spinal tumors were astrocytomas (17. 8%), ependymal tumors and lipomas (15.6% each).
结论室管膜下巨细胞型星形细胞瘤是具有独特组织病理学特点的良性肿瘤。
Conclusions Subependymal giant cell astrocytoma is a benign brain tumor with distinctive histopathologic features.
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.
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.
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.
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.
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