RT Book, Section A1 Greenberger, Norton J. A2 Greenberger, Norton J. A2 Blumberg, Richard S. A2 Burakoff, Robert SR Print(0) ID 55958950 T1 Chapter 27. Autoimmune Pancreatitis T2 CURRENT Diagnosis & Treatment: Gastroenterology, Hepatology, & Endoscopy, 2e YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-176848-1 LK accessmedicine.mhmedical.com/content.aspx?aid=55958950 RD 2024/04/23 AB Presentation with obstructive jaundice.Diffuse swelling and enlargement of the pancreas, especially the head, the latter mimicking carcinoma of the pancreas.Diffuse irregular narrowing of the pancreatic duct on ERCP or MRCP.Elevated serum IgG4 level.Extrapancreatic and intrahepatic bile duct strictures.Resolution or marked improvement in pancreatic and extrapancreatic manifestations after corticosteroid treatment.Pancreatic biopsies reveal extensive fibrosis and lymphoplasmacytic infiltration.HISORT criteria used to establish the diagnosis.