[名词解释] 漏斗骨盆(funnel shaped pelvis)

骨显像对骨转移性肿瘤的诊断，尤其是原发病灶肯定时寻找骨转移灶颇具临床价值，是由于() ["A．灵敏度高","B．可显示全身骨病灶","C．提供放射性核素治疗的依据","D．以上均是","E．以上均不是"] 关于骨肉瘤的临床特点，下列哪个答案是错误的() ["A．常见于股骨下端、胫骨和腓骨上端","B．高度恶性","C．多早期发生肺转移","D．X线表现骨破坏与成骨并存","E．多见于老年人"] 胎头下降停滞 均小骨盆 头盆均倾不均 漏斗骨盆(funnel shaped pelvis)