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Buried bumper syndrome, gastroscopy. A: Pressure ulcer under the internal bolster repositioned to the gastric lumen; B: Hyperplastic tissue growing over the edge of the disk; C: Flat stomach wall with fistula orifice covering totally the internal bolster; D: Completely buried disc retracting the gastric mucosa; E: Internal bolster totally embedded in the stomach wall resembling a submucosal tumor. Flushing solution running from the internal orifice of the residual fistula.
