title: Inflammatory bowel disease: one or two diseases?
abstract: This chapter addresses the longstanding question of whether inflammatory bowel disease (IBD) is really one or two diseases. The straightforward answer is that ulcerative colitis (UC) and Crohn's disease (CD) embody separate diseases more than a single syndrome. In reality, however, the question is more complex. This chapter makes the case that there are actually many more than just two diseases under the rubric of IBD.
authors.affiliation: Mount Sinai School of Medicine, One Gustave L. Levy Place, Box 1069, New York, NY 10029-6574, USA. david.sachar@mountsinai.org
authors.forename: David B
authors.initials: DB
authors.lastname: Sachar
authors.forename: Aaron
authors.initials: A
authors.lastname: Walfish
mesh_terms: D003093:Colitis, Ulcerative / Q000145:classification / Q000235:genetics / Q000628:therapy; D003424:Crohn Disease / Q000145:classification / Q000235:genetics / Q000628:therapy; D005838:Genotype; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000145:classification* / Q000235:genetics / Q000628:therapy; D010641:Phenotype