Background During primary systemic vasculitides gastrointestinal (GI) involvement is associated with a poor outcome, leading to the use of immunosuppressive therapy. The significance of GI involvement during hepatitis C virus (HCV)-related systemic vasculitis has never been evaluated.
Objective To evaluate the significance of GI involvement during HCV-related systemic vasculitis in the antiviral therapy era.
Methods Data from 163 patients were retrospectively reviewed to describe the presentation and outcome of patients with HCV-related systemic vasculitis with GI involvement (GI+), and to compare them with patients without GI involvement (GI−).
Results GI manifestations were present in 12 (7.4%) patients. Abdominal pain was consistently present in GI+ patients, and half of patients presented with surgical abdomen and/or intestinal bleeding. GI+ compared to GI− patients had more frequent renal (75% vs 30%; p=0.003) and cardiac involvement (25% vs 2%; p=0.006), medium-vessel vasculitis (67% vs 22%; p=0.003) and higher mixed cryoglobulinaemia levels (2.2 g/l vs 1.2 g/l; p=0.07). After treatment, GI+ and GI− patients had similar rates of overall clinical response of the vasculitis and immunological and virological responses. HCV-MC vasculitis patients with GI involvement did not have poorer overall survival than those without.
Conclusion GI involvement is a rare manifestation of HCV-related vasculitis, associated with acute-onset and life-threatening manifestations. In contrast with primary vasculitides, GI+ patients do not seem to have poorer overall survival than GI− patients.
- Hepatitis C virus
- mixed cryoglobulinemia
- gastrointestinal involvementcryoglobulinemia
- gastrointestinal pathology
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Competing interests None.
Ethics approval This study was conducted with the approval of the Pitié Salpétrière, Paris.
Provenance and peer review Not commissioned; externally peer reviewed.