Esophageal diverticulum: New perspectives in the era of minimally invasive endoscopic treatment

Figure 2 A case of iatrogenic diverticulum after peroral endoscopic myotomy. A: An iatrogenic diverticulum (yellow triangle) is visible on the anterior right wall in the lower esophagus on barium swallow; B: Hypercontractions on high resolution manometry persisted after peroral endoscopic myotomy, causing pulsion of the esophageal wall; C: Endoscopic view of the iatrogenic diverticulum of the esophagus that developed on the side where peroral endoscopic myotomy was performed, which lacks a muscle layer.