Radiation, Microscopic, and Ischemic Colitis

  • Isabelle Raîche
  • Husein MolooEmail author


Colitis spans a spectrum of pathologies. This chapter focuses on colitides that affect a large number of patients but may not always be appreciated. Microscopic colitis, for example, has been found to affect up to 30% of patients over the age of 70 with chronic diarrhea and a normal colonoscopy. With the increasing use of radiation, radiation colitis and proctitis have become a common problem that colorectal surgeons need a knowledge base of to manage appropriately. Ischemic colitis is the most common cause of gastrointestinal ischemia. An appreciation of the basics of the pathophysiology and medical and surgical management gives a surgeon the ability to maximize the quality of care provided to every patient they encounter with these issues.


Radiation proctitis  Radiation colitis  Microscopic colitis  Collagenous colitis  Lymphocytic colitis  Ischemic colitis 

Copyright information

© ASCRS (American Society of Colon and Rectal Surgeons) 2019

Authors and Affiliations

  1. 1.Department of Surgery, The Ottawa HospitalUniversity of OttawaOttawaCanada
  2. 2.Department of Surgery, Ottawa Hospital Research InstituteUniversity of OttawaOttawaCanada

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