Bronchogenic cysts treated with submucosal tunneling endoscopic resection and natural orifice transluminal endoscopy: Two case reports and review of literature

Figure 2 Intraoperative findings during mediastinal bronchogenic cyst resection (case 1). A: Creation of the submucosal tunnel; no lesion was observed within the submucosal layer; B: Intraoperative endoscopic ultrasonography confirmed the presence of the lesion; C: Full-thickness myotomy and careful dissection of the muscularis propria exposed the cyst; D: Yellowish gelatinous fluid was released from the cyst cavity; E: Surgical field following cyst removal; F: Mucosal entry site securely closed with endoscopic clips.