Biliary reflux or duodenogastric reflux is a condition that occurs when biliary fluid flows upward (refluxes) from the duodenum into the stomach and esophagus.[1]
It is different from Gastroesophageal Reflux Disease (GERD), which happens when the stomach acids flow into the esophagus.
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Biliary reflux often confused with acid reflux, should not be left untreated "Biliary reflux has been implicated in the pathogenesis of Barrett's Oesophagus. Gastro oesophageal reflux disease is typically thought of as an acid reflux problem. However, studies have shown that biliary reflux can be a contributing factor in oesophageal complications of the disease. Incidence of Barrett’s oesophagus and oesophageal adenocarcinoma is greater among patients with biliary reflux and excessive duodenogastric reflux has been implicated in the etiology of antral gastric ulcers and gastritis."
Most damage to the pyloric valve occurs as a complication of gastric surgery. Other causes of biliary reflux include: