In the endoscopic views, the normal appearance of the pylorus is seen at the left, with the first portion of the duodenum at the right.
窥镜图里可见正常的幽门在左边，十二指肠的起始部在右边。
In the endoscopic views, the normal appearance of the pylorus is seen at the left, with the first portion of the duodenum at the right.
窥镜图里可见正常的幽门在左边，十二指肠的起始部在右边。
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