Fig. 2From: Esophageal bronchogenic cyst treated with submucosal tunneling endoscopic resection: two case reportsa Cyst fluid spraying out after incision. b Internal view of the cyst wall was demonstrated. c Cyst wall was excised using endoscopic argon plasma coagulation. d Microscopic findings showed the cyst wall tissue lined by ciliated columnar epitheliumBack to article page