Autoimmune Pancreatitis:Typing,Diagnosis,and Treatment.

Autoimmune pancreatitis (AIP),a special type of chronic pancreatitis,is autoimmune-mediated and can be accompanied by swelling of the pancreas and irregular stenosis of the pancreatic duct. The main pathological features are fibrosis of pancreatic duct with IgG4-positive lymphoplasmacytic infiltration. Different typing methods of AIP can have differerent disease conditions. This paper reviews the history,clinical presentation,diagnostic criteria,and treatment of different AIP types to provide a new basis for the diagnosis and treatment.