Fig. 4. Endoscopic full-thickness resection for treatment of gastric gastrointestinal stromal tumor (GIST). (A) Gastric GIST located at posterior wall of cardia. (B) Half circumferential mucosal incision distal to the GIST. (C) Extending the submucosal dissection to muscularis propria. (D) Full-thickness incision over muscularis propria into peritoneal cavity. (E) Retraction of the submucosal GIST using clip and string technique, and exposure of serosal margin of the GIST. (F) Full-thickness closure using overstitch suturing device.
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