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Radiation Enteritis

  • Small Intestine (J Sellin, Section Editor)
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Abstract

Radiation enteritis continues to be a major health concern in recipients of radiation therapy. The incidence of radiation enteritis is expected to continue to rise during the coming years paralleling the unprecedented use of radiotherapy in pelvic cancers. Radiation enteritis can present as either an acute or chronic syndrome. The acute form presents within hours to days of radiation exposure and typically resolves within few weeks. The chronic form may present as early as 2 months or as long as 30 years after exposure. Risk factors can be divided into patient and treatment-related factors. Chronic radiation enteritis is characterized by progressive obliterative endarteritis with exaggerated submucosal fibrosis and can manifest by stricturing, formation of fistulae, local abscesses, perforation, and bleeding. In the right clinical context, diagnosis can be confirmed by cross-sectional imaging, flexible or video capsule endoscopy. Present treatment strategies are directed primarily towards symptom relief and management of emerging complications. Recently, however, there has been a shift towards rational drug design based on improved understanding of the molecular basis of disease in an effort to limit the fibrotic process and prevent organ damage.

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Ala Sharara, Ali Harb, and C. Abou Fadel disclose no conflicts of interest.

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This article does not contain any studies with human or animal subjects performed by any of the authors [137].

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Correspondence to Ala I. Sharara.

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This article is part of the Topical Collection on Small Intestine

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Harb, A.H., Abou Fadel, C. & Sharara, A.I. Radiation Enteritis. Curr Gastroenterol Rep 16, 383 (2014). https://doi.org/10.1007/s11894-014-0383-3

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