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Little is known about the role of chronic gastritis on weight loss after laparoscopic sleeve gastrectomy (LSG). This study aims to investigate the relationship between histopathologic findings of gastric specimens, excess weight loss (% EWL), and excess BMI loss (% EBL) at 6 and 12 months follow up after LSG. We retrospectively reviewed the clinical records of 95 patients who had undergone LSG between January 2017 and December 2019. Based on the histopathological findings of gastric resection specimens, patients were divided into those with chronic gastritis (CG) and those without chronic gastritis (NoCG) and compared for their % EWL and % EBL at 6 and 12 months. The mean BMI was 44.74 kg/m 2  in the CG group and 44.14 kg/m 2  in the NoCG group. At 6 months follow up, the CG group had a mean % EWL of 45.7 and % EBL of 40.5, while NoCG had a mean % EWL of 51.1 and % EBL of 46.7. After 1-year follow-up, the CG group had a mean % EWL of 53.1 and a % EBL of 44.8, while the NoCG group had a % EWL of 54.1 and % EBL of 44. This observational study does not support the hypothesis that the occurrence of chronic gastritis can affect postoperative % EWL and % EBL.

Histopathologic findings on removed stomach after sleeve gastrectomy. Do they influence the outcome?