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收集少见的特殊类型脑膜瘤，包括微囊型４例，富于淋巴浆细胞型２例，脊索样型２例，透明细胞型１例，分泌型１例，乳头型２例，间变型２例；另脑膜的血管外皮瘤５例，共１９例。除ＨＥ染色外，并做５种免疫组化染色（ｖｉｍｅｎｔｉｎ、ＥＭＡ、ｋｅｒａｔｉｎ、ＦⅧ、ＧＦＡＰ）及ＡＢ－ＰＡＳ染色，５例还做了常规电镜检查。另用１１例常见类型脑膜瘤做同样染色进行对照。通过研究总结出各型脑膜瘤的形态特征，结合临床、形态和免疫组化等结果，讨论了各型肿瘤的发生机制。提出过去诊断血管母细胞性脑膜瘤大多实为脑膜的血管外皮瘤，其免疫组化和电镜特征不同于脑膜瘤而与外周性血管外皮瘤相同，是一种位于ＣＮＳ的血管外皮瘤，而不再认为是脑膜瘤的亚型。
A rare type of meningioma was collected, including 4 cases of microcapsules, 2 cases of lymphoproliferation, 2 cases of chordal type, 1 case of clear cell type, 1 case of secretory type, 2 cases of papillary type and 2 cases of variant type ; Another meningeal vascular hemangioma in 5 cases, a total of 19 cases. In addition to HE staining, five immunohistochemical staining (vimentin, EMA, keratin, FⅧ, GFAP) and AB-PAS staining were performed. Five patients underwent conventional electron microscopy. Another 11 cases of common types of meningioma to do the same staining control. By researching the morphological characteristics of various types of meningiomas, the mechanisms of various types of tumors were discussed in combination with the clinical, morphological and immunohistochemical results. Proposed in the past diagnosis of most of the original hemangioblastoma hemangiopericytoma hemangiomas, its immunohistochemical and electron microscopic features different from meningioma and peripheral hemangiopericytoma is a located in the CNS hemangiopericytoma, and not Think subtype of meningioma again.