Abstract
To explore the clinical features of immunoglobin (IgG4)-related Mikulicz's disease (MD). Since December 2010, a prospective cohort study of IgG4 related disease (IgG4RD) was performed our hospital. A total of 42 IgG4RD patients were recruited along with 18 MD patients. Their clinical, laboratory and histopathological features and response to treatment were analyzed. The 18 MD patients accounted for 42.9% of IgG4RD. There were 10 males and 8 females with a mean age of (48 ± 14) years. The mean follow-up period was 8.18 months. All of them had an involvement of salivary and lacrimal glands. Fifteen cases suffered other organs' damage, including autoimmune pancreatitis (n = 7), sclerosing cholangitis (n = 4) and lymph nodes (n = 6). And 10 patients complained of a history of allergies. All serum levels of IgG4 subclass significantly increased. Histological examinations in 16 patients revealed massive infiltration of lymphocytes and IgG4 positive plasma cells with obvious tissue fibrosis. Glucocorticoid and immunosuppressive therapies were effective for MD. As an IgG4-related systemic disease involving predominantly lacrimal and salivary glands without autoantibodies, MD is treated optimally with a combination therapy of glucocorticoid and immunosuppressive drugs.
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