Intestinal Research  
Nonsteroidal anti-inflammatory drug-induced enteropathy
Sung Jae Shin, Choong-Kyun Noh, Sun Gyo Lim, Kee Myung Lee, Kwang Jae Lee
Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea
Correspondence to: Sung Jae Shin, Department of Gastroenterology, Ajou University School of Medicine, 164 World cup-ro, Yeongtong-gu, Suwon 16499, Korea. Tel: +82-31-219-5149, Fax: +82-31-219-5999, E-mail: shsj9128@ajou.ac.kr
Received: February 16, 2017; Revised: May 5, 2017; Accepted: May 7, 2017; Published online: August 28, 2017.
© Korean Association for the Study of Intestinal Diseases. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are well known to be associated with serious upper gastrointestinal complications, such as peptic ulcer, bleeding, perforation, and obstruction. Recently, attention has been mainly focused on the small bowel injuries caused by NSAIDs, and new endoscopic techniques such as capsule endoscopy and double balloon endoscopy can help in detecting such injuries. This article reviewed the epidemiology, pathogenesis, clinical manifestations, diagnosis, and treatment of small bowel injuries caused by NSAIDs. Small bowel injures by NSAIDs might occur with a similar frequency and extent as those observed in the upper gastrointestinal tract. The pathogenesis of NSAID-induced enteropathy is complex and not clearly understood. The various lesions observed in the small bowel, including petechiae, reddened folds, loss of villi, erosions, and ulcers can be detected by capsule endoscopy. A drug that could prevent or treat NSAID-induced enteropathy has not yet been developed. Therefore, further investigations should be performed to elucidate the pathogenesis of such enteropathy and develop suitable preventive and treatment strategies.
Keywords: Anti-inflammatory agents, non-steroidal; Small intestine injury; Capsule endoscopy


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