乳头状瘤的乳头中心(轴索)的成分是() ["A．癌细胞","B．脉管","C．纤维结缔组织","D．癌细胞和纤维结缔组织","E．纤维结缔组织和脉管"]
皮样囊肿()脑动静脉畸形()神经纤维瘤病()听神经鞘瘤()垂体PRL腺瘤() ["A．内听道扩大及早期耳聋、耳鸣","B．咖啡样色素斑","C．泌乳、闭经","D．灌注压突破","E．皮毛窦"]
肿瘤细胞核染色体多呈() ["A．单倍体","B．双倍体","C．三倍体","D．多倍体或非整倍体","E．以上都不是"]
垂体腺瘤
Cushing综合征
简述鞍区肿瘤的主要临床表现。
