Esophagogastroduodenoscopy was performed and only twisted mucosa converging into a point near the esophagogastric junction was noted during retroversion of the endoscope.

• 在内视镜下胃的出口并不容易找到，只在内视镜反转时看见扭曲的黏膜皱壁集中到靠近食道胃接合处旁的一个小区域。