下列哪项不属于神经上皮来源的脑肿瘤（） ["A．星形细胞瘤","B．少突胶质瘤","C．上皮样囊肿","D．室管膜瘤","E．髓母细胞瘤"] 各种脑肿瘤在颅内分布有其相对特殊性，第三脑室内肿瘤最常见的是() ["A．神经鞘瘤","B．多形性胶质母细胞瘤","C．胶样囊肿","D．室管膜瘤","E．髓母细胞瘤"] 最多见的颅内肿瘤是() ["A．脑膜瘤","B．垂体膜瘤","C．神经胶质瘤","D．神经鞘瘤或神经纤维瘤","E．血管瘤"] 对小脑幕的描述，错误的是() ["A．幕切迹上方与大脑枕叶紧邻","B．后缘附着于横窦沟","C．前缘弧形为小脑幕切迹","D．颅内压增高可形成小脑幕切迹扣","E．位于大脑枕叶与小脑上面之间"] 下列细胞中来源与巨噬细胞无关的是() ["A．泡沫细胞","B．Aschoff细胞","C．伤寒细胞","D．印戒细胞","E．类上皮细胞"] 下述炎症改变中，最有防御意义的是()