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.
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.
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.
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.
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.
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