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Case Reports in Gastrointestinal Medicine
Volume 2016, Article ID 6392028, 4 pages
http://dx.doi.org/10.1155/2016/6392028
Case Report

Seronegative Intestinal Villous Atrophy: A Diagnostic Challenge

Department of Gastroenterology, Setúbal Hospital Center, São Bernardo Hospital, Setúbal, Portugal

Received 8 July 2016; Accepted 18 September 2016

Academic Editor: Maria Teresa Bardella

Copyright © 2016 Cláudio Martins et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Celiac disease is the most important cause of intestinal villous atrophy. Seronegative intestinal villous atrophy, including those that are nonresponsive to a gluten-free diet, is a diagnostic challenge. In these cases, before establishing the diagnosis of seronegative celiac disease, alternative etiologies of atrophic enteropathy should be considered. Recently, a new clinical entity responsible for seronegative villous atrophy was described—olmesartan-induced sprue-like enteropathy. Herein, we report two uncommon cases of atrophic enteropathy in patients with arterial hypertension under olmesartan, who presented with severe chronic diarrhea and significant involuntary weight loss. Further investigation revealed intestinal villous atrophy and intraepithelial lymphocytosis. Celiac disease and other causes of villous atrophy were ruled out. Drug-induced enteropathy was suspected and clinical improvement and histologic recovery were verified after olmesartan withdrawal. These cases highlight the importance for clinicians to maintain a high index of suspicion for olmesartan as a precipitant of sprue-like enteropathy.