[名词解释] 异位妊娠(ectopic pregnancy)

羊水过多的病因有哪些? 先兆流产(threatened abortion) 男，6岁，髋部疼痛、跛行半年，结合图像，最可能的诊断是() ["A．髋关节结核","B．股骨头骨骺缺血坏死","C．骨肉瘤","D．骨囊肿","E．软骨肉瘤"] 妊娠期肝内胆汁淤积症(intrahepatic cholestasis of pregnancy，ICP) 翻身试验(roll over test，ROT) 异位妊娠(ectopic pregnancy)