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1、lGliomas 胶质瘤lMeningiomas 脑膜瘤lPituitary tumor 垂体瘤lAcoustic neurinoma 听神经瘤lCraniopharyngioma 颅咽管瘤lMetastatic tumors 转移瘤lEtc 等等Astrocytic tumors Oligodendroglial tumors Ependymal cell tumors Mixed gliomas AstrocytomaLow-gradeAstrocytomaGBMGBMGBMOligodendrogliomaOligodendrogliomaOligodendrogliomaEpendym
2、omaEpendymomaEpendymomalMeningiomas represent 15% of all brain tumorslMeningiomas are more common in women than in men, with a male-to-female ratio of 1:2lMeningiomas have a predilection to occur from the third to sixth decades of life, with a peak incidence occurring in individuals aged approximate
3、ly 45 years.MeningiomaMeningiomaMeningiomaMeningiomaMeningiomalTumour arising from the cells of the pituitary gland. l Microadenoma (10 mm)lPituitary adenomas are usually benign tumours, and pituitary carcinomas are very rare. lCoronal and sagittal thin slice T1-weighted images, without and with con
4、trast enhancement. lMicroadenomas are usually iso-hypointense and are particularly well seen after gadolinium injection when the pituitary gland enhances homogeneously. lThe direction of growth of macroadenoma is well appreciated and involvement of chiasm and cavernous sinus may be detected.Microade
5、noma, pituitaryMicroadenoma, pituitaryDelay a few minuteslPlain film lCT lMRIlCraniopharyngiomas are typically found in the first two decades of life and usually have both solid and cystic components. lCyst content may have different appearances but usually appears as machine-oil and contains charac
6、teristic suspended cholesterol crystals. lCalcifications are present in the vast majority of these tumours. lSex: primary tumor. Lung cancer is the most common source of metastases in male patients, while breast cancer is the most common source in female patients. lAge: primary systemic tumors. Most brain m
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