A type of nonspecific ulcerative colitis in which the most distal part of the colon and the rectum initially are uninvolved was described originally by Bargen and Weber,2 in 1930, as "regional migratory chronic ulcerative colitis." The condition has been termed "right-sided colitis," "regional ulcerative colitis," and "type 2 ulcerative colitis." The preferred name at present appears to be "segmental ulcerative colitis." The inflammatory process may be limited to the right side of the colon or to one or more parts of the colon, or it may extend continuously from the cecum into the sigmoid. Whatever the distribution and extent of the inflammatory process in the more proximal reaches of the colon, the part of the intestine accessible to proctoscopic examination is entirely normal initially.
As is true of regional enteritis, the treatment of segmental colitis was considered at first to be primarily surgical. The involved part of the
BLACK BM, CULP CE. Segmental Ulcerative Colitis: Results of Surgical Treatment. Arch Surg. 1961;83(1):105–110. doi:10.1001/archsurg.1961.01300130109013
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