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  • Title: Association Between Body Mass Index and Clinical and Endoscopic Features of Eosinophilic Esophagitis.
    Author: Wolf WA, Piazza NA, Gebhart JH, Rusin S, Covey S, Higgins LL, Beitia R, Speck O, Woodward K, Cotton CC, Runge TM, Eluri S, Woosley JT, Shaheen NJ, Dellon ES.
    Journal: Dig Dis Sci; 2017 Jan; 62(1):143-149. PubMed ID: 27778205.
    Abstract:
    BACKGROUND: Because eosinophilic esophagitis (EoE) causes dysphagia, esophageal narrowing, and strictures, it could result in low body mass index (BMI), but there are few data assessing this. AIM: To determine whether EoE is associated with decreased BMI. METHODS: We conducted a prospective study at the University of North Carolina from 2009 to 2013 enrolling consecutive adults undergoing outpatient EGD. BMI and endoscopic findings were recorded. Incident cases of EoE were diagnosed per consensus guidelines. Controls had either reflux or dysphagia, but not EoE. BMI was compared between cases and controls and by endoscopic features. RESULTS: Of 120 EoE cases and 297 controls analyzed, the median BMI was lower in EoE cases (25 vs. 28 kg/m2, p = 0.002). BMI did not differ by stricture presence (26 vs. 26 kg/m2, p = 0.05) or by performance of dilation (26 vs. 27 kg/m2 for undilated; p = 0.16). However, BMI was lower in patients with narrow caliber esophagus (24 vs. 27 kg/m2, p < 0.001). EoE patients with narrow caliber esophagus also had decreased BMI compared to controls with narrow caliber esophagi (24 vs. 27 kg/m2, p = 0.001). On linear regression after adjustment for age, race, and gender, narrowing decreased BMI by 2.3 kg/m2 [95% CI -4.1, -0.6]. CONCLUSIONS: BMI is lower in EoE cases compared to controls, and esophageal narrowing, but not focal stricture, is associated with a lower BMI in patients with EoE. Weight loss or low BMI in a patient suspected of having EoE should raise concern for esophageal remodeling causing narrow caliber esophagus.
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