Mild-to-moderate left-sided ulcerative colitis and proctitis

摘要

Ulcerative colitis (UQ is a chronic disease characterized by varying degrees of inflammation of the colonic mucosa. The disease almost always affects the rectum, but variably extends proximally to involve other parts of or the entire colon and in some cases the far distal part of the terminal ileum.Based on the extent of colonic involvement the Montreal classification has recently defined three subgroups of UC: ulcerative proctitis (UP), when the disease is limited to the rectum; left-sided colitis (LS-UC), when the disease extends up to but distal to the splenic flexure; and extensive colitis, when the disease extends proximally to the splenic flexure1. Previously, the terms LS-UC