“…Performing endoscopic examination in the remnant stomach is difficult, particularly in RYGB, and some cases of advanced gastric cancer have been reported [ 6 ]. Banding of the stomach has been reported to cause reflux and stagnation of gastric contents and to be associated with Barrett's esophagus and a risk of esophageal cancer [ 7 ]. In some cases, edema, inflammation, and ulceration can be observed in the gastric mucosa below the band formation, accompanied by edema and dysplasia [ 8 ].…”