Abstract
Esophageal stenosis after ESD has been recorded high for large-scale esophageal lesion. Risk factors for increasing the occurrence of stenosis includes long type lesions, lesions infiltrating into the muscularis mucosa and muscular layer injury. In this case, postoperative stricture of the patient was highly likely occurred. Smectite is a mucosal protective agent that can resist external stimuli, promote wound healing, and reduce inflammatory factors. Therefore, it can effectively prevent the formation of scars on wounds. This study was carried out in humans for the first time and was successful. In conclusion, endoscopic spraying of smectite may be effective and safe in preventing esophageal stenosis after ESD with large non-circumferential lesions.
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