*Duodenal Exclusion: Indications and Clinical Considerations DOI: http://dx.doi.org/10.5772/intechopen.108516*

absence of mesenteric division may reduce the rate of anastomotic leak and internal hernias, respectively. Two specific complications associated with OAGB are anastomotic ulcers and bile reflux [22]. Anastomotic ulcers can be treated with medical therapy, treatment of H pylori if applicable, smoking cessation, etc.…. However, it may become chronic and a revisional surgery may be required to modify the OAGB to either a RYGB or even to restore the normal anatomy. Bile reflux through the gastrojejunal anastomosis can cause severe symptoms of abdominal pain, food intolerance, and reflux symptoms. It can increase the risk of dysplasia, and gastric and esophageal cancer. Endoscopic surveillance should be performed in symptomatic patients given the possibility of malignancy. In case of persistent bile reflux, revisional surgery with conversion to a RYGB, or restoration of original anatomy should be considered (**Figure 2**).
