Buried bumper syndrome: A critical analysis of endoscopic release techniques

Figure 4 Description of techniques. A: A standard papillotome was inserted from the outside under endoscopic control, bent, and drawn back, to perform at least 3 radical cuttings in the mucosa covering the bumper; B: The “balloon dilator” technique: A balloon dilator was endoscopically advanced to meet a guidewire inserted from outside; then was pushed over the guidewire into the tube and inflated to remain impacted. Traction of the balloon allowed the extraction of the bumper.