Fig. 1From: Esophageal bronchogenic cyst treated with submucosal tunneling endoscopic resection: two case reportsa Endoscopic image showing a 20 × 20 mm bulging lesion in the proximal esophagus. b Endoscopic ultrasound revealed a hypoechoic cystic lesion arising from the muscularis propria. c Computed tomography revealed an obvious mass located in the proximal esophagusBack to article page