在内镜检查中 ,对十二指肠球部上角、上曲部有一个明确的概念 ,通过上述部位即能观察降部情况 ,但都可体会到有的患者需往右往上转镜费上一番周折才到达降部 ,有的患者则在幽门口就可观察到降部粘膜 ,即球部上角、上曲结构是否明显 ,这二种情况就是本文所认为的球部解剖结构有 In the endoscopy, duodenal bulb on the corner, the song on the Department there is a clear concept, through the above-mentioned parts can be observed lower part of the situation, but can appreciate that some patients need to turn the right turn up mirror Costs to reach the descending part of the twists and turns, and some patients in the pylorus can be observed lower descending mucosa, the upper corner of the ball, the song structure is obvious, these two cases is considered in this article ball anatomy Have