Do you have what it takes for challenging endoscopic submucosal dissection cases?

Figure 3 Lesion at the pyloric channel extending to the duodenal bulb. A: Nodular elevated lesion involving the pyloric channel; B: Polypoid mass lesion at the duodenal bulb, retroflexed view; C: Incision and submucosal dissection were performed from the duodenal bulb to the antrum; D: The 180° circumferential dissection was completed; E: The en bloc resection was completed.