Endoscopic diverticulotomy with an isolated-tip needle-knife papillotome (Iso-Tome) and a fitted overtube for the treatment of a Killian-Jamieson diverticulum

Figure 2 A fitted overtube. A: A photograph of a fitted overtube. The distal end of a standard overtube is snipped off with a scissor in a rectangular form according to the size of the diverticular opening (arrow); B: An endoscopic view following insertion of a fitted overtube (white arrow: Tissue bridge; Black arrow: Overtube). The tissue bridge of the diverticulum is exposed in the fixed operational field. The surrounding esophageal wall is completely protected and stabilized.