1 侧脑室脑膜瘤的一般特点 1854年,Shaw首次报道了1例右侧侧脑室三角区脑膜瘤;1881年,Mac Dowell报告了1例左侧三角区脑膜瘤;到1986年为止,报道的侧脑室脑膜瘤大约为360例。脑膜瘤是颅内的良性肿瘤,一般占颅内肿瘤的15％～19％,侧脑室脑膜瘤大约占脑膜瘤的0.5％～4.5％。侧脑室脑膜瘤起源于脑室内的脉络膜组织或脉络膜基质,由于三角区 1 The general characteristics of lateral ventricular meningioma In 1854, Shaw first reported a case of right lateral ventricle triangular meningioma; 1881, Mac Dowell reported a case of left triangular meningioma; until 1986, the reported side Ventricular meningioma is about 360 cases. Meningiomas are intracranial benign tumors, accounting for 15% to 19% of intracranial tumors, and lateral ventricular meningioma accounting for about 0.5% to 4.5% of meningioma. Lateral ventricular meningioma originated in the ventricular choroidal tissue or choroidal stroma, the triangle area