第四脑室肿瘤的影像诊断(附35例分析)

CT and MRI diagnosis of fourth ventricular neoplasms

目的 评价和探讨第四脑室内肿瘤的CT和MRI诊断价值。方法 经手术病理证实的四脑室肿瘤35例,回顾性分析其CT和MRI表现。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。CT显示肿瘤钙化较佳,对肿瘤的的鉴别诊断帮助很大。MR可以三维成像,可以准确显示肿瘤的位置及邻近情况。结论 四脑室肿瘤的诊断主要依靠其CT和MRI表现,结合年龄特征,可进一步提高诊断正确率。

Purpose To evaluate and study CT and MRI diagnostic value of fourth ventricule tumors. Methods 35 cases of fourth ventricular tumors confirmed by pathology were retrospectively by CT and MRI. Results The most common neoplasms were medulloblastoma and ependymoma and astrocytoma in the fourth ventricular. Some tumors had specific patient s age. CT is better in finding tumor calfication that may suggest the diagnosis. MR is more useful in showing the tumor location and other appearance nearby. Conclusion CT and MRI are very helpful to correct diagnosis of fourth ventricuar tumors.