囊状水瘤多发于() ["A．2岁以后","B．2岁以前","C．青少年","D．成人","E．老年"]
下列哪项叙述不符合结核性脑膜炎的CT表现() ["A．脑沟及脑池内可见高密度影","B．增强扫描脑沟及脑池内可见结节状强化","C．脑沟及脑池内钙化点","D．脑积水","E．白质片状低密度"]
第2鳃裂瘘管外瘘口多位于() ["A．胸锁乳突肌后缘下1/3","B．胸锁乳突肌前缘上1/3","C．胸锁乳突肌前缘中1/3","D．胸锁乳突肌前缘下1/3","E．胸锁乳突肌前缘中、上1/3交界处"]
第1鳃裂瘘管内瘘口位于() ["A．腭扁桃体窝","B．舌盲孔","C．梨状窝","D．外耳道软骨部","E．咽后壁"]
如何区别单纯性眼睑下垂和重症肌无力所导致的眼睑下垂。
何为早产儿视网膜病变，它的病因，国际分类法以及主要临床表现。
