Abstract
Some early gastric cancers might be advantageously staged and treated by full-thickness resection if secure methods for closing the defect were available. The aim of this study was to test the feasibility of full-thickness gastric resection. Full-thickness gastric resections were performed by using a ligating device without submucosal injection in survival studies in pigs (n = 8). The defects were closed by using new methods for suturing, locking, and cutting thread through a 2.8-mm accessory channel. Stitches (n = 2-4) were placed close to the target area before resection. Full-thickness resections (n = 8) were performed. The pigs survived without incident for 21 to 28 days. Healing of the suture site was evident at follow-up endoscopy. Suture sites were water tight. The pull-out force with stitches by using this new sewing method was significantly higher than with endoscopic clips (20.3 N +/- 0.94 vs. 2.2 N +/- 0.42, p < 0.05). Endoscopic full-thickness resection with sutured defect closure was feasible and appeared safe in these survival experiments.
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