Endoscopy dissection of small stromal tumors emerged from the muscularis propria in the upper gastrointestinal tract: Preliminary study

Figure 1 Endoscopic submucosal dissection for submucosal tumor in the antrum. A: Lesion located in the gastric antrum; B: Circumferential incision of the lesion after submucosal injection; C, D: Dissection and exposure of the submucosal lesion; E: Ligation of the root of the lesion with a detachable endoloop; F: Endoscopic follow-up after 1 mo; the lesion disappeared.

Figure 2 Endoscopic submucosal dissection process for esophageal submucosal tumor. A: Esophageal submucosal tumor located in the median esophagus; B: The lesion was found in the muscularis propria by endoscopic ultrasonography; C, D: The lesion was exposed by dissection of a hook knife and gradually resected by an IT knife-2; E: After the tumor fell off, the cut oozing was stopped using metal clips; F: The lesion (2.0 cm × 1.0 cm) was completely resected with an intact envelope; G: After 2 wk follow-up, the incision disappeared and the wound surface looked smooth.

Figure 3 Gastrointestinal stromal tumors in the fundus were dissected by endoscopy. A: Submucosal tumor located in the fundus; B: The lesion was shown in the muscularis propria by endoscopic ultrasonography (EUS); C: White lesion was clearly identified, two clips were used to arrest bleeding from small submucosal vessel; D: The wound surface after dissection of the lesion; E: The dissected tumor (3.0 cm × 2.0 cm) with intact envelope; F: Pathological image of the resected gastrointestinal stromal tumors and calcification in the center of the lesion in accordance with EUS image.