title: Lichen planus and hepatitis C virus--related chronic active hepatitis.
abstract: METHODS
  An increased prevalence of chronic liver disease has been reported in patients with lichen planus (LP). We report six cases of LP associated with chronic active hepatitis and actively replicating hepatitis C virus (HCV).
  
  
  RESULTS
  We studied six patients (three men and three women; mean age, 61 years; age range, 47 to 70 years) with various forms (cutaneous and/or mucosal) of LP and abnormal liver test results. Four patients had severe mucosal lesions. Cutaneous and mucosal lesions had a long-term evolution. Liver disease was discovered 2 to 6 years before LP in three cases and was diagnosed at the same time as LP in the three other cases. Liver biopsy performed in five patients showed chronic active hepatitis without cirrhosis in all five cases. Anti-HCV antibodies were detected in all cases by second-generation enzyme-linked immunosorbent assay and confirmed by second-generation recombinant immunoblot assay. Hepatitis C virus RNA was evidenced by means of polymerase chain reaction in the serum samples from the six patients, proving active viral replication.
  
  
  CONCLUSIONS
  Lichen planus may be associated with HCV-related chronic active hepatitis. As interferon treatment may induce viral inactivation in some patients with HCV-related chronic liver disease, a search for HCV infection should be systematically performed in patients with chronic LP.
authors.affiliation: Department of Dermatology, University of Paris XII, Créteil, France.
authors.forename: C
authors.initials: C
authors.lastname: Jubert
authors.forename: J M
authors.initials: JM
authors.lastname: Pawlotsky
authors.forename: F
authors.initials: F
authors.lastname: Pouget
authors.forename: C
authors.initials: C
authors.lastname: Andre
authors.forename: L
authors.initials: L
authors.lastname: DeForges
authors.forename: S
authors.initials: S
authors.lastname: Bretagne
authors.forename: J P
authors.initials: JP
authors.lastname: Mavier
authors.forename: J
authors.initials: J
authors.lastname: Duval
authors.forename: J
authors.initials: J
authors.lastname: Revuz
authors.forename: D
authors.initials: D
authors.lastname: Dhumeaux
mesh_terms: D000368:Aged; D005260:Female; D006526:Hepatitis C / Q000150:complications*; D006521:Hepatitis, Chronic / Q000150:complications*; D006801:Humans; D008010:Lichen Planus / Q000382:microbiology*; D008297:Male; D008875:Middle Aged