Figure 2From: Suspected idiopathic sclerosing orbital inflammation presenting as immunoglobulin G4-related disease: a case report Laboratory data before and after treatment with oral prednisolone. Administration at a daily dose of 20 mg was initiated. The serum IgG4 levels decreased dramatically. The laboratory data initially showed an IgG4 level of 94 mg/dL. After nine months this had decreased to 64 mg/dL.Back to article page