Modified Hepatobiliary Scintigraphy for the Diagnosis of Bile Reflux in One-Anastomosis Gastric Bypass Surgery: a Prospective Multicenter Study.

Purpose: One-anastomosis gastric bypass (OAGB) is a relatively simple surgical procedure for those afflicted with severe obesity. Studies reported symptomatic biliary reflux gastritis and esophagitis as predominant complications. Hepatobiliary scintigraphy (HIDA) is the least invasive test for the diagnosis of bile reflux, with good sensitivity, patient tolerability, and reproducibility.