[A case of Castlemans disease (plasma cell type) in which autoimmune pancreatitis developed 6 years later]

In 1998 a 74-year-old man, he had a medical checkup and mediastinal and hilar lymph node hyperplasia were discovered. Since the lymph nodes showed a tendency to increase in size, mediastinal lymph node biopsy was performed in the following year. Castlemans disease was diagnosed, and he was followed up. In 2005, autoimmune pancreatitis (AIP) developed. At this time, the mediastinal lymph node that had been biopsied was stained with anti-IgG4 antibody. Further examinations on pancreatic lesions associated with Castlemans disease and AIP are necessary in relation to IgG4-related systemic diseases.