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What is Distal colitis with respect to ulcerative colitis refers to: and explain in detail?
Distribution of ulcerative colitis: 1. Proctitis - involvement limited to the rectum 2. Distal colitis - Left-sided involvement limited to the colon distal to the splenic flexure 3. Pancolitis -Extensive involvement extends proximal to the splenic flexure, including pancolitis This classification known as the Montreal classification Ref: Journal of Crohn's and Colitis (2012) 6, 965-990.