The prevalence, clinical features and association of HLA-B27 in sacroiliitis associated with established Crohn's disease.
BACKGROUND: Sacroiliitis is a recognized complication of Crohn's disease and may occur distinct from progressive ankylosing spondylitis (AS). AIM: To estimate prospectively the prevalence of sacroiliitis in patients with established Crohn's disease, to characterize the clinical features and to correlate these with the presence of HLA-B27. METHODS: All Crohn's disease patients under active follow-up of between 5 and 12 years duration were invited to participate. Patients underwent a clinical ...Expand abstract
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