[名词解释] 胎盘滞留

脐带帆状附着(cord velamentous insertion) 诊断食管癌的首选检查方法是() ["A．食管粘膜脱落细胞检查","B．食管X线检查","C．食管CT检查","D．内镜检查及活检","E．超声内镜"] 胎盘嵌顿 完全性子宫破裂(complete rupture ofuterus) 羊水栓塞(amnionic fluid embolism) 胎盘滞留