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Title: Increased Incidence of Symptomatic Cholelithiasis After Bariatric Roux-En-Y Gastric Bypass and Previous Bariatric Surgery: a Single Center Experience.
Author: Sneineh MA, Harel L, Elnasasra A, Razin H, Rotmensh A, Moscovici S, Kais H, Shirin H.
Journal: Obes Surg; 2020 Mar; 30(3):846-850. PubMed ID: 31901127.
Abstract:
BACKGROUND: Bariatric surgery predisposes patients to cholelithiasis and therefore the need of a subsequent cholecystectomy; however, the incidence of cholecystectomy after bariatric surgery is debated. AIM AND METHODS: Medical records of 601patients hospitalized for bariatric surgery between January 2010 and July 2018 were reviewed. Our aim was to evaluate the incidence of cholecystectomy following different types of common bariatric procedures. All patients who developed cholelithiasis and a subsequent cholecystectomy were included. Cholelithiasis was diagnosed by clinical criteria and characteristic ultrasound findings. RESULTS: We retrospectively evaluated 580 patients with an average follow-up of 12 months (range 6-24 months). Twenty-one patients were excluded because of missing data. Mean age was 48 ± 19 years (78% females). Twenty-nine patients (5%) underwent laparoscopic cholecystectomy (LC) before the bariatric surgery, and 58 patients (10%) performed concomitant LC with the bariatric procedure due to symptomatic gallstone disease (including stones, sludge, and polyps). There were 203 laparoscopic sleeve gastrectomy (SG) (35%), 175 laparoscopic gastric band (LAGB) (30%), 55 Roux-en-Y gastric bypass (RYGB) (9.5%), and 147 (25%) mini gastric bypass (MGB) procedures during the study period. At the follow-up period, 36 patients (6.2%) developed symptomatic cholelithiasis, while the most common clinical presentation was biliary colic. There was a significant difference between the type of the bariatric procedure and the incidence of symptomatic cholelithiasis after the operation. The incidence of symptomatic gallstone formation in patients who underwent RYGB was 14.5%. This was significantly higher comparing to 4.4% following SG, 4.1% following LAGB, and 7.5% following MGB (p = 0.04). We did not find any predictive risk factors including smoking; BMI at surgery; change in BMI; comorbidities such as diabetes, hyperlipidemia, hypertension, and COPD for gallstone formation; or a subsequent cholecystectomy. Interestingly we found that previous bariatric surgery was a risk factor for gallstone formation and cholecystectomy, 13/82 patients (15.8%) compared to 23/492 patients (4.6%) among those without previous bariatric operation (p < 0.001)]. CONCLUSION: Our data demonstrate that patients with previous bariatric surgery or patients planned for RYGB are at high risk to develop postoperative symptomatic gallbladder disease. Concomitant cholecystectomy during the bariatric procedure or alternatively UDCA treatment for at least for 6 months to avoid the high incidence of postoperative symptomatic gallstones should be considered in those asymptomatic patients.

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