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A 69-year-old man with gastric cancer was admitted to our hospital because of vomiting. Two gastroduodenal stents (Niti-S D pyloric/duodenal stent; TaeWoong Medical Inc., Seoul, South Korea) had previously been inserted from the first portion of the duodenum to the body of the stomach because of antral obstruction. Esophagogastroduodenoscopy revealed migration of the proximal stent (●" Fig.1). The stent required trimming to resolve the symptoms. A loop cutter FS-5L-1 (Olympus Medical Systems Corp., Tokyo, Japan) was used to trim the stent (●" Fig.2). The GIF-2T240 (Olympus) two-channel endoscope was used for the procedure. The wire was easily cut by the loop cutter device when a single wire was grasped precisely. If the wire became stuck in the groove of the scissors, another loop cutter was inserted through the opposite working channel in order to cut the stuck wire (●" Video 1). After the stent had been cut circumferentially, only the section that was embedded deeply into the tumor was left. The wires near the embedded site were grasped tightly and were torn away from the tumor. Finally, the trimmed stent was retrieved by alligator forceps through the overtube (●" Fig.3 and●" Fig.4). There are several reports describing the trimming of biliary metal stents, but reports of enteral stent trimming are limited [1–3]. Argon plasma coagulation (APC) is frequently reported as a stent trimming device, whereas reports on the use of the loop cutter are limited [4,5]. The major problem associated with the use of APC is mucosal damage, especially when the stent wire is embedded into the tumor. The major problemwith the loop cutter is that the wire sometimes becomes stuck in the groove of the scissors. To overcome this problem, a two-channel endoscope is used and another loop cutter is inserted to cut the stuck wire if needed. Therefore, trimming the Niti-S D pyloric/duodenal stent using a loop cutter and two-channel endoscope is safe and useful.

Endoscopic trimming of a migrated gastroduodenal stent using a loop cutter and a two-channel endoscope