先天性肾位置异常可位于() ["A．腰骶部","B．盆腔","C．胸腔","D．对侧","E．腹部"]
肾下垂常见的原因有() ["A．重体力劳动","B．女性、消瘦、营养不良","C．腹部肿块","D．腹壁松弛","E．从事久站久立职业"]
关于精索静脉曲张的治疗方法，下列哪项是错误的() ["A．无症状或症状轻者，可用阴囊托带或穿紧身内裤","B．症状较重者，应手术治疗","C．手术原则是高位结扎和切断精索内静脉","D．手术一般采用腹股沟切口","E．单纯切除阴囊内扩张静脉也可取得良好效果"]
不属于精索内静脉变异的是() ["A．走行变异","B．开口异位","C．双精索内静脉","D．交通支","E．髂静脉"]
血型鉴定时结果不是很明显，还应该做些什么试验?
简述输血可能导致的并发症。
