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Autologous Flap Transfer for Esophageal Stricture Prevention After Endoscopic Submucosal Dissection in a Porcine Model.
Digestive Diseases and Sciences 2018 May 9
BACKGROUND: Esophageal stricture caused by endoscopic submucosal dissection for a mucosal defect that covers more than three quarters of the circumference of the esophagus has a high incidence. To date, no method for preventing such strictures has been widely recognized as effective in clinical practice.
AIMS: We examined whether esophageal stricture caused by circumferential endoscopic submucosal dissection could be prevented by autologous flap transfer.
METHODS: Six pigs (N = 6) underwent circumferential esophageal endoscopic submucosal dissection under general anesthesia. For animals in the flap group (N = 3), an autologous flap was constructed and then placed at the resection site and secured with metal clips. Animals in the control group (N = 3) underwent endoscopic submucosal dissection only. Endoscopy was performed 3 weeks postoperative to evaluate the effects of flap transfer.
RESULTS: Animals in the flap group gained more weight than animals in the control group. At 3 weeks postoperative, animals in the flap group developed clinically slight stricture; in these animals, an endoscope could be passed through the stricture with slight resistance. In contrast, in the control group, significant stricture was observed, and the stricture was difficult to cross with an endoscope.
CONCLUSION: Autologous flap transfer after circumferential esophageal endoscopic submucosal dissection is a novel approach that remarkably decreases the degree of esophageal stricture that arises.
AIMS: We examined whether esophageal stricture caused by circumferential endoscopic submucosal dissection could be prevented by autologous flap transfer.
METHODS: Six pigs (N = 6) underwent circumferential esophageal endoscopic submucosal dissection under general anesthesia. For animals in the flap group (N = 3), an autologous flap was constructed and then placed at the resection site and secured with metal clips. Animals in the control group (N = 3) underwent endoscopic submucosal dissection only. Endoscopy was performed 3 weeks postoperative to evaluate the effects of flap transfer.
RESULTS: Animals in the flap group gained more weight than animals in the control group. At 3 weeks postoperative, animals in the flap group developed clinically slight stricture; in these animals, an endoscope could be passed through the stricture with slight resistance. In contrast, in the control group, significant stricture was observed, and the stricture was difficult to cross with an endoscope.
CONCLUSION: Autologous flap transfer after circumferential esophageal endoscopic submucosal dissection is a novel approach that remarkably decreases the degree of esophageal stricture that arises.
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