Hyperthyroidism and hypothyroidism in patients with autoimmune pancreatitis.

Objective: The objective of this study is to clarify the clinical features of thyroid dysfunction observed in patients with autoimmune pancreatitis (AIP).

Methods: We repeatedly examined thyroid function in 74 patients with type 1 AIP (58 males, 16 females; average onset age of AIP 67 years). Clinical and serological findings in patients with thyroid dysfunction were analyzed.

Coexisting Type 1 Autoimmune Pancreatitis and Mixed-type Intraductal Papillary Mucinous Neoplasm.

An 84-year-old man was referred to our hospital for a cystic lesion of the pancreatic head, swelling of the pancreatic tail and hilar biliary stricture, resulting in elevated liver enzyme levels. We suspected branch duct-type intraductal papillary mucinous neoplasm (IPMN) and type I autoimmune pancreatitis (AIP) associated with sclerosing cholangitis because of the high serum IgG4 levels. The main pancreatic duct on the tail side of the AIP lesion was moderately dilated.