One Anastomosis Gastric Bypass and Risk of Cancer.

The one anastomosis gastric bypass (OAGB) is a recent procedure, which still raises controversies concerning its presumed role in the genesis of biliary reflux and the risk of developing esophageal or gastric cancer. A review of the literature in order to have evidence in favor of or against the risk of cancer after OAGB. We have conducted a review of the English literature using the MEDLINE database. The theoretical risk of asymptomatic chronic biliary reflux after OAGB exists and may be responsible for gastroesophageal cancer. It is justified to indicate OAGB for patients over 50 years of age. Otherwise, it is reasonable to indicate endoscopic gastroesophageal examination periodically after OAGB in all patients in order to screen asymptomatic biliary reflux.