Endoscopic ultrasound-guided fine needle aspiration in the differentiation of type 1 and type 2 autoimmune pancreatitis

doi:10.3748/wjg.v18.i29.3883

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Aug 7, 2012 (publication date) through Jan 26, 2025

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World Journal of Gastroenterology

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1007-9327

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastroenterol. Aug 7, 2012; 18(29): 3883-3888
Published online Aug 7, 2012. doi: 10.3748/wjg.v18.i29.3883

Table 1 Histological criteria for International Consensus Diagnostic Criteria

	Level 1	Level 2
Type 1 AIP
Histology of the pancreas	LPSP (core biopsy/resection)	LPSP (core biopsy)
Histology of the pancreas	At least 3 of the following:	Any 2 of the following:
	(1) Periductal lymphoplasmacytic infiltrate without granulocytic infiltration	(1) Periductal lymphoplasmacytic infiltrate without granulocytic infiltration
	(2) Obliterative phlebitis	(2) Obliterative phlebitis
	(3) Storiform fibrosis	(3) Storiform fibrosis
	(4) Abundant (> 10 cells/HPF) IgG4-positive cells	(4) Abundant (> 10 cells/HPF) IgG4-positive cells
Type 2 AIP
Histology of the pancreas (core biopsy/resection)	IDCP
Histology of the pancreas (core biopsy/resection)	Both of the following:	Both of the following:
	(1) GEL with or without granulocytic acinar inflammation (2) Absent or scant (0-10 cells/HPF) IgG4-positive cells	(1) Granulocytic and lymphoplasmacytic acinar infiltrate (2) Absent or scant (0-10 cells/HPF) IgG4-positive cells

AIP: Autoimmune pancreatitis; LPSP: Lymphoplasmacytic sclerosign pancreatitis; IDCP: Idiopathic duct-centric pancreatitis; GEL: Granulocytic infiltration of the duct wall; IgG4: Immunoglobulin G4; HPF: High power field.

Citation: Ishikawa T, Itoh A, Kawashima H, Ohno E, Matsubara H, Itoh Y, Nakamura Y, Hiramatsu T, Nakamura M, Miyahara R, Ohmiya N, Goto H, Hirooka Y. Endoscopic ultrasound-guided fine needle aspiration in the differentiation of type 1 and type 2 autoimmune pancreatitis. World J Gastroenterol 2012; 18(29): 3883-3888
URL: https://www.wjgnet.com/1007-9327/full/v18/i29/3883.htm
DOI: https://dx.doi.org/10.3748/wjg.v18.i29.3883