Abstract
Extraintestinal manifestations in patients withinflammatory bowel disease (IBD) are quite common (about25%) and careful clinical observation and statisticalanalysis during the last five decades have demonstrated that in colitis-associatedextraintestinal complications, the organs most commonlyinvolved are the biliary tract, joints, skin, and eyes.However, almost all organs can be involved in IBD. Some of the extraintestinal manifestations mayprecede IBD, although the majority accompany theunderlying disease and are influenced by its activity.Prompt recognition of extracolonic organ involvement in IBD is important because of the relativerefractoriness of the disease and a possible increase inmorbidity and mortality. The identified pathogeneticautoimmune mechanisms include genetic susceptibility, cytokine imbalances, antigenic display ofautoantigen, aberrant self-recognition, andimmunopathogenetic autoantibodies against organ-specificcellular antigen(s) shared by colon and extracolonicorgans. Microbes may play an important role, probablyby molecular mimicry.
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Das, K.M. Relationship of Extraintestinal Involvements in Inflammatory Bowel Disease (New Insights into Autoimmune Pathogenesis). Dig Dis Sci 44, 1–13 (1999). https://doi.org/10.1023/A:1026629528233
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DOI: https://doi.org/10.1023/A:1026629528233