3 years ago

Gallstone Disease After Laparoscopic Sleeve Gastrectomy in an Asian Population—What Proportion of Gallstones Actually Becomes Symptomatic?

Jimmy Bok Yan So, Asim Shabbir, Davide Lomanto, Lee Leng Loh, Muhammed Yaser Hasan

Abstract

Background

Despite evidence on gallstone disease after laparoscopic sleeve gastrectomy (LSG), there is an existing lack of consensus on practice guidelines, i.e., surveillance and stone-lowering prophylaxis. Available evidence also has a racial bias as western reports predominate current data. Considering the growing popularity of LSG in Asia and the unique Asian anthropometrics, we have attempted to provide a regional perspective by reviewing our LSG database to investigate the epidemiology of this complication.

Methods

One hundred two morbidly obese cases were retrospectively reviewed. Abdominal ultrasounds were conducted preoperatively and at 12-month post-op. No gallstone-lowering prophylaxis was used. Outcome measure was the incidence of new gallstone formation at 1 year and the rate of symptomatic stones during the follow-up period.

Results

Mean age was 43 years (range 20–68) with average initial BMI of 41.68 kg/m2. Preoperative gallstones were present in 14 (13.7%) cases. At 12-month post-op, 24 (27.5%) patients with no previous gallstone disease developed new stones. Within the mean follow-up period of 28.4 months, only one case (0.9%) developed gallstone complication requiring a cholecystectomy. We found no statistical difference in demographics, BMI variables (initial BMI, ΔBMI at 6 months and 1 year), and comorbidities between patients with new gallstone and those without stones.

Conclusion

Our results match western data in that gallstone formation is common after LSG though incidence of complicated stones is small. This is despite not using gallstone-lowering prophylaxis. The low conversion rate also questions the relevance of surveillance screening, as most patients with new gallstones remain asymptomatic at least in the short-term follow-up.

Publisher URL: https://link.springer.com/article/10.1007/s11695-017-2657-y

DOI: 10.1007/s11695-017-2657-y

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