符合食管癌的发生发展的描述是() ["A．由鳞状上皮异型增生演化而来","B．早期食管癌预后良好","C．早期表现为原位癌","D．可多中心起源","E．早期食管癌症状轻微"]
中晚期食管癌的肉眼类型有() ["A．平坦型","B．溃疡型","C．蕈伞型","D．髓质型","E．缩窄型"]
与食管癌发生有关的因素是() ["A．过热饮食习惯","B．吸烟","C．亚硝胺","D．钼等微量元素缺乏","E．维生素缺乏"]
羊水栓塞的处理原则是什么?
食管癌转移的主要方式是() ["A．直接扩散","B．淋巴转移","C．血行转移","D．种植转移","E．少见转移到其他部位"]
诊断胎膜早破的方法有哪些?
