Any involvement, regional or general, of the large intestine above the lower part of the rectum resulting in a sanguineous, a mucosanguineous, a mucopurulent or a mucopurulent-sanguineous exudate, with or without diarrhea, due to known or unknown factors, save that of a neoplasm, is a colitis. Clinically, the corollary follows that a colonic exudate or feces containing blood, mucoblood or pus, or all of them, is due to a colitis when neoplastic disease and perianal, perirectal and localized disturbances of the hemorrhoidal area are eliminated as causes.
This communication concerns itself with a form of colitis known as idiopathic. primary, nonspecific, ulcerative, chronic ulcerative, hemorrhagic or suppurative colitis, colitis gravis, ulcerosa or ulcereuse.
—This syndrome is not restricted to age, sex, season or zone. The greatest number of cases fall within the second, third and fourth decades.
—Idiopathic ulcerative colitis possesses neither epidemic nor infective
PAULSON M. THE PRESENT STATUS OF IDIOPATHIC ULCERATIVE COLITISWITH ESPECIAL REFERENCE TO ETIOLOGY. JAMA. 1933;101(22):1687–1694. doi:10.1001/jama.1933.02740470001001
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