We pierced these phytobezoars repeatedly with biopsy forceps to form several tunnels to let gastric juice seep into the interior part and digest it.Each procedure lasts 20-30 minutes.

• 我们利用内视镜生检钳反覆穿刺胃粪石表面，造成数个孔道让胃液可以渗入胃粪石中间并消化它，这个步骤需时约20-30分钟。