Double peroral endoscopic myotomy for achalasia

      As experience grows with peroral endoscopic myotomy (POEM), operators are taking on more anatomically challenging cases. Additionally, we are now seeing patients who relapse after a prior POEM. Therefore, the operator must be aware of the steps necessary to adequately investigate and treat such patients. For example, it is of no benefit to continue to target the lower esophageal sphincter if this already has been treated effectively. We herein present 2 different teaching cases in which 2 POEM procedures (double POEM) were performed in each of the patients (Video 1, available online at
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