Influence of body mass index on the prevalence and progression of dysplasia in Barrett’s esophagus: a retrospective analysis*

AbstractObjective: High body mass index (BMI) is a risk factor for Barrett’s esophagus (BE) and esophageal adenocarcinoma (EAC). Our aim was to determine if prevalence of dysplasia in BE varies by BMI and study the effect of BMI on progression to high-grade dysplasia (HGD) or EAC.Materials and methods: This is a retrospective review of patients with endoscopic evidence of BE confirmed by presence of intestinal metaplasia on histology from January 2000 to December 2012 at Cleveland Clinic. Patient demographics, BMI and endoscopic findings such as length of BE, dysplasia in BE and size of hiatal hernia were reviewed. Dysplasia was classified as no dysplasia (NDBE), low-grade dysplasia (LGD), HGD and EAC.Results: In this cohort of 1239 patients, average BMI was 29.8 ± 6 kg/m2. There were 228 (18.4%) in group with BMI <25, 236 (19%) in BMI group 25–27.4, 262 (21.1%) in BMI 27.5–29.9, 303 (24.5%) in BMI 30–34.9, 126 (10.2%) in BMI 35–39.9 and 86 (6.8%) in BMI ≥40. Lower BMI groups had lower prevalence of dyspl...