Present state of endoscopic ultrasonography-guided fine needle aspiration for the diagnosis of autoimmune pancreatitis type 1

Table 1 Studies on the use of endoscopic ultrasonography-guided fine needle aspiration for the diagnosis of autoimmune pancreatitis after the International Consensus Diagnostic Criteria (excluding case reports)

Ref.	Yr	Needle (G)	No. of needle passes	n	LPI	OP	SF	IgG4 (+) PC	Level 1 HF	Level 1 or 2 HF
Conventional EUS-FNA of single-center study
Imai et al[20]	2011	22	3.5 ± 0.9	21	11	0	0	0	0	0
Ishikawa et al[21]	2012	22	2.0 ± 0.48	39	16	0	34	10	9	14
Cao et al[22]	2018	22	3.59 ± 1.28	27	18	0	18	8	5	17
Iwashita et al[23]	2012	19	3.0	44	23	21	38	5	17	19
Multicenter study
Morishima et al[24]	2016	22	2.02 ± 0.48	41	36	0	0	27	0	27
Kanno et al[25]	2016	22	3.4 ± 1.3	78	43	38	49	19	32	45
EUS-FNA by automated spring-loaded Powershot needle
Kanno et al[26]	2012	22	3-7	25	23	4	20	9	14	20

EUS-FNA: Endoscopic ultrasonography-guided fine needle aspiration; LPI: Lymphoplasmacytic infiltrate without granulocytic infiltration; OP: Obliterative phlebitis; SF: Storiform fibrosis; IgG4 (+) PC: Abundant (> 10 cells/HPF) IgG4-positive cells; Level 1 HF: Level 1 histological findings; Level 2 HF: Level 1 or level 2 histological findings.