Combined treatment of refractory benign stricture after esophageal endoscopic mucosal dissection: A case report

Figure 1 Histology of the esophageal mucosa before endoscopic submucosal dissection and the wound surface after treatment. A: Iodine staining showing extension of the target lesion to almost two-thirds of the esophageal circumference, including a small non-stained area; B: Pathological examination of biopsy specimen showing severe squamous cell dysplasia; C: En-bloc lesion resection was performed five days after endoscopic submucosal dissection; the formation of ulcers can be seen on the wound.