title: Crohn's disease in monozygotic twins.
abstract: A pair of monozygotic twins with Crohn's disease is described. Both have ileocaecal disease and suffered their first symptoms after living apart for 6 years. The pathogenic role of hereditary and environmental factors is discussed in the light of this and previous reports of twins with Crohn's disease.
mesh_terms: D000328:Adult; D003424:Crohn Disease / Q000235:genetics*; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D014427:Twins; D014430:Twins, Monozygotic