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Mucosa-preserving Zenker’s diverticulotomy, endoscopic views. A, Zenker's diverticulum (left), septum (middle), and esophageal lumen (right). B, Submucosal injection at the septum. C, Mucosal incision. D, Dissection to expose the underlying muscular septum. E, Myotomy. F, Closure of mucosal defect.
