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. 2021 Sep 15;6(12):562–567. doi: 10.1016/j.vgie.2021.08.003

Figure 4.

Figure 4

Zenker’s peroral endoscopic myotomy (Z-POEM) with mucosotomy. A, The septum separates the Zenker’s diverticulum from the true esophageal lumen. B, After Z-POEM, a large residual mucosal flap can contribute to persistent symptoms. C, Transection of the mucosal flap to the most inferior aspect of the diverticulum widens the communication between the diverticulum and the esophagus, thereby favoring preferential passage into the true esophageal lumen.