[Progressive multifocal leukoencephalopathy secondary to JC virus infection after liver transplantation and treatment of recurrent hepatitis C].

Progressive multifocal leucoencephalopathy due to JC virus is a rare complication of liver transplantation. Only four cases have already been described in the literature. This disease is difficult to differentiate from leucoencephalopathy associated with immunosuppressive drugs such as cyclosporin or tacrolimus.