title: Polyarteritis nodosa and mixed cryoglobulinaemia related to hepatitis B and C virus coinfection.
abstract: OBJECTIVE
  To determine the responsibility of hepatitis B virus (HBV) and hepatitis C virus (HCV) and therapeutic implications in a patient who developed systemic vasculitis.
  
  
  METHODS
  The case of a 38 year old woman who had a past history of addiction to intravenous drugs and developed systemic vasculitis after infection by HBV and HCV is described. The clinical and laboratory findings substantiated not only the diagnosis of polyarteritis nodosa (PAN) but also that of mixed cryoglobulinaemia with a monoclonal IgMkappa component.
  
  
  CONCLUSIONS
  Because cryoglobulins are rarely found in HBV related PAN but often associated with HCV infection, and in light of the histological findings, cryoglobulinaemia was interpreted as being secondary to HCV infection. This example of a highly complex situation emphasises the need to gather all relevant clinical, biological, histological, and complementary data so that the best treatment for overlapping of distinct vasculitides can be selected.
authors.affiliation: Department of Internal Médicine, Hôpital Avicenne, Université Paris-Nord, 125, route de Stalingrad, 93009 Bobigny CEDEX, France.
authors.forename: P
authors.initials: P
authors.lastname: Garcia de La Peña Lefebvre
authors.forename: L
authors.initials: L
authors.lastname: Mouthon
authors.forename: P
authors.initials: P
authors.lastname: Cohen
authors.forename: F
authors.initials: F
authors.lastname: Lhote
authors.forename: L
authors.initials: L
authors.lastname: Guillevin
mesh_terms: D000328:Adult; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D003449:Cryoglobulinemia / Q000209:etiology* / Q000628:therapy; D005260:Female; D019694:Hepatitis B, Chronic / Q000150:complications*; D019698:Hepatitis C, Chronic / Q000150:complications*; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000627:therapeutic use; D010951:Plasma Exchange; D010488:Polyarteritis Nodosa / Q000209:etiology* / Q000628:therapy; D011994:Recombinant Proteins; D013256:Steroids; D016896:Treatment Outcome
chemical_list: D000893:Anti-Inflammatory Agents; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D013256:Steroids