Endoscopic treatment of extreme esophageal stenosis complicated with esophagotracheal fistula: A case report

Figure 4 The endoscopic incision method and esophageal stent placement performed at admission. A: The esophageal stenosis part which made the endoscope unable to enter; B: There were fistulas in the patient's esophagus; C: The esophageal lumen increased significantly after treatment by the endoscopic incision method; D: The upper end of the stent after placement.