Endoscopic diagnosis of chronic diarrhea

Yoshikazu Kinoshita, Ryusuke Ariyoshi, Seiji Fujigaki, Katsuhide Tanaka, Teruhisa Morikawa, Tsuyoshi Sanuki, Yoshikazu Kinoshita, Ryusuke Ariyoshi, Seiji Fujigaki, Katsuhide Tanaka, Teruhisa Morikawa, Tsuyoshi Sanuki

Abstract

The prevalence of chronic diarrhea in the general population is reported to be 4%-5%. Since various pathological conditions cause diarrheal symptoms, etiological diagnosis of chronic diarrhea is difficult in many cases. Medical history taking, physical examinations, and laboratory testing are not adequately sensitive or specific, thus a colonoscopic investigation is frequently employed for etiological evaluation. However, for cases with non-bloody chronic diarrhea, the diagnostic yield of a colonoscopy procedure is reported to be not high enough. Furthermore, endoscopically identifiable findings are not adequately specific for the diagnosis of diarrheal disease, except for inflammatory bowel disease, while microscopic colitis, amyloidosis, eosinophilic gastroenteritis, celiac disease, and bile acid diarrhea are difficult to definitively diagnose using endoscopic findings. Thus, a histopathological examination of biopsy samples obtained with endoscopy is critically important. Endoscopists should consider obtaining biopsy samples from even normal-appearing gastrointestinal mucosa for chronic diarrhea diagnosis.

Keywords: amyloidosis; bile acid diarrhea; celiac disease; collagenous colitis; eosinophilic gastroenteritis.

Conflict of interest statement

The authors declare that they have no conflict of interest.

© 2021 The Authors. DEN Open published by John Wiley & Sons Australia, Ltd on behalf of Japan Gastroenterological Endoscopy Society.

Figures

FIGURE 1
FIGURE 1
Flow of diagnosis of chronic diarrhea. IBS, irritable bowel syndrome

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Source: PubMed

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