Conclusion The X-ray examination is better than ultrasonic wave, endoscope and CT at showing the abnor mal appearence of the duodenum cancer.

• 结论 X线检查比超声、CT、内镜检查更有效的显示十二指肠癌的异常表现，X线检查能做到对十二指肠癌的诊断与鉴别诊断。