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This was a prospective study performed in a Department of Veterans Affairs Medical Center. The aim of this study was to use endoscopic and histological examinations to determine the potential diagnostic origins of chronic gastrointestinal symptoms among patients who were part of the deployment of troops to the Persian Gulf after August 1990. Twenty-four (8%) male patients (mean age, 42 years) of 308 patients in the Persian Gulf War Registry agreed to undergo endoscopic examination of chronic symptoms, including heartburn (29%), dyspepsia (33%), dysphagia (8%), diarrhea (63%), Hemoccult-positive stool (21%), and rectal bleeding (17%). There were 17 upper endoscopies, 18 colonoscopies, and 4 flexible sigmoidoscopies performed, all with biopsies. Five (33%) of 15 patients had positive serological findings for Helicobacter pylori. With upper endoscopy, major findings included esophagitis (12%), Schatzki's ring (12%), hiatal hernia (47%), antral erythema (59%), and duodenal erythema (29%). With lower endoscopy, major findings included ileitis (5%), lymphoid hyperplasia (9%), polyps (27%), diverticulosis (23%), and hemorrhoids (23%). Major histopathological findings included microscopic esophagitis (24%), gastritis with H. pylori (35%), gastritis without H. pylori (18%), Crohn's disease (5%), tubular adenoma (5%), hyperplastic polyps (18%), and melanosis coli (5%). Most patients with chronic heartburn or dyspepsia have evidence of esophagitis or H. pylori. Individuals with these chronic symptoms should undergo evaluation.

Evaluation of Chronic Gastrointestinal Symptoms following Persian Gulf War Exposure