儿童肾母细胞瘤(Wilms)声像图特点是()①瘤体较大，边界清晰②内回声不均，呈混合性回声③瘤体小，边界不清晰④内回声低、均质⑤残余肾组织受压肾盂变形，可合并肾盏积水 ["A．①②⑤","B．③④⑤","C．①⑤","D．②⑤","E．①②④⑤"] 腭裂的声像图所见是()①上颌骨冠状断面显示鼻骨以下骨缺失②上颌骨冠状断面显示鼻骨以上骨缺失③囊状肿物从唇部突出④颧骨断裂 ["A．①","B．③④","C．②③","D．①②③④","E．②③④"] 恶性葡萄胎在超声表现上与下列哪种病变十分相似() ["A．子宫肌瘤变性","B．子宫内膜间质肉瘤","C．绒毛膜癌","D．子宫颈癌","E．子宫体癌"] 关于过期妊娠的声像图表现，下列哪项不正确() ["A．胎盘老化","B．易发生胎儿窘迫","C．胎儿测值常小于同孕龄胎儿","D．胎儿皮下脂肪变薄","E．羊水量增多"] 晚期血吸虫病实质上是血吸虫性肝纤维化，可出现黄疸、上消化道出血、肝性脑病、腹水等临床表现，预后较差。晚期血吸虫病与严格意义上的肝硬化相比，最根本的不同点在于() ["A．无明显的假小叶形成","B．无肝功能失代偿","C．无严重的门静脉高压","D．无Ⅰ型胶原增生","E．肝脏质地软"] 急性血吸虫病的好发季节为()