Autoimmune pancreatitis (AIP) is a rare chronic pancreatitis and the incidence is increasing recently. However, the formal report of this disease is still rare in literatures. Here, we reported a rare case of IgG4 positive autoimmune pancreatitis to make the awareness of this type of disease. The patient was a 58-year-old Chinese male who was suffered from epigastric pain accompanied by nausea and vomiting. An occupying lesion was detected in the body of the pancreas tail with the ultrasound examination. The serum IgG4 levels, white blood cells, blood amylase and the γ-globulin fraction were all increased. After operation, the following pathological detection with immunochemistry test confirmed the diagnosis of autoimmune pancreatitis.
Keywords: Autoimmune pancreatitis; IgG4 positive; immunohistochemistry.
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