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  • Title: [Autoimmune pancreatitis associated with rheumatoid arthritis: successful combination therapy with steroids and methotrexate].
    Author: Mustak M, Boltuch-Sherif J, Horvath-Mechtler B, Kowalski-Bodzenta J, Erlacher L.
    Journal: Dtsch Med Wochenschr; 2011 Sep; 136(37):1842-4. PubMed ID: 21898275.
    Abstract:
    UNLABELLED: MEDICAL HISTORY AND CLINICAL FINDINGS: A 70-year-old female patient suffered from steatorrhea and upper abdominal discomfort for 8 weeks combined with new onset of arthralgia in both hands. Additionally she reported elevated fasting blood glucose levels. The physical examination was without pathological findings except for mild upper abdominal pressure pain. INVESTIGATIONS: Imaging studies, including MRI and ultrasound examinations showed diffuse pancreatic enlargement without peripancreatic vessel involvement. Serological examinations showed elevated Cancer Associated Antigen 19 - 9 (1289 U/ml) and hyperglobulinemia with an IgG level of 170 mg/dl. The inflammatory markers were within normal ranges other than a slightly elevated erythrocyte sedimentation rate (35mm/1 h). Subsequent pancreatic biopsy showed lymphoplasmocellular, neutrophile and eosinophile granulocyte infiltration causing damage of the acinar pancreatic cells, typical for autoimmune pancreatitis (AIP). Magnetic resonance imaging (MRI) confirmed arthritis of both hands. TREATMENT AND COURSE: Medical treatment was started with oral prednisolone (50 mg/day) for one week, tapered to 25 mg/day for another 2 weeks, followed by dose reductions of 5 mg/day every 2 weeks with a final maintenance dose of 5 mg/day for 8 months. After the first week of steroid therapy methotrexate (MTX) was started with an initial dose of 10 mg/week. Dose was raised until a final dosage of 30 mg/week. After 8 months without relapse, the maintenance therapy was reduced to 20 mg/week MTX and corticosteroids were stopped. CONCLUSION: With this treatment regimen the patient has showed complete remission of AIP and arthritis for 36 months. MTX may be successful as an initial basic treatment to reach better control of autoimmune-related extrapancreatic manifestations.
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