颈动脉体瘤位于() ["A．颌下三角区","B．颏下三角区","C．颈动脉三角区","D．肌三角区","E．锁骨上三角区"] 关于听神经瘤的CT表现，下述不正确的是() ["A．内听道可不增宽","B．肿瘤边缘清楚","C．可发生囊变坏死","D．多无明显强化","E．少数可双侧发病"] 由创伤所致的颈动脉瘤多位于() ["A．颈内动脉","B．颈外动脉","C．颈总动脉","D．颈动脉分叉处","E．颈外动脉的分支"] 系统性红斑狼疮约有20%～25%的患者出现眼底改变，表现为() ["A．视网膜脱离","B．向心性视野缩小","C．视盘充血和水肿","D．微动脉瘤","E．继发性视神经萎缩"] Sjogren综合征是一种以侵犯哪些腺体为主的自身免疫性疾病() ["A．汗腺","B．唾液腺","C．腮腺","D．泪腺","E．消化腺"] 急性脑梗死发病8～24小时内，常见CT表现是()