Divide and annex
A 64-year-old man presents with a 1-year history of dysphagia occurring intermittently before progressing to quotidian occurrence. Esophagram and subsequent EGD reveal a 5-cm Zenker’s diverticulum. He undergoes peroral endoscopic myotomy (Z-POEM) dividing the muscular septum and thus annexing the diverticular space into the esophageal lumen, which is uneventful. However, he returns in 1 month with recurrent dysphagia symptoms. Which of the following statements is true?
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