Untypical autoimmune pancreatitis and pancreatic cancer: differential diagnosis experiences extracted from misdiagnose of two cases

Table 2 Serological immune realted antibody: ↑ represent higher than reference, ↓ represent lower than reference. Immunoturbidimetry (ITM), Western blotting (WB), indirect immunofluorescence (IFL), blank no test

	Case 1 (postoperative)	Case 2		Reference (unit)	method
	Case 1 (postoperative)	preoperative	postoperative	Reference (unit)	method
IgA	1.66	2.14	2.23	0.7–4.0 g/L	Elisa
IgG	13.34	11.34	16.3	7–16 g/L	Elisa
IgM	3.25↑	0.67	0.909	0.4–2.3 g/L	Elisa
IgE			657.50↑	20~200 IU/mL	Elisa
t-PSA			0.831	0–4 ng/mL	Elisa
f-PSA			0.301	0–4 ng/mL	Elisa
ASO			< 25.0	0–116 IU/mL	Elisa
Anti-CCP	1.75			0–25 IU/mL	Elisa
anti-TB	negative			negative	Elisa
AMA-M2	8.12			0–25 IU/mL	Elisa
Anti-a-Fodrin	negative			negative	Elisa
Complement 3	1.09		0.740↓	0.79–1.52 g/L	ITM
Complement 4	0.14		0.069↓	0.1–0.4 g/L	ITM
RF	1.95		73.1↑	<20 IU/mL	ITM
IgG1			1170.0↑	405–1011 mg/dL	ITM
IgG2			234	169–768 mg/dL	ITM
IgG3			32.8	11–85 mg/dL	ITM
IgG4	5.43	98	266.0↑	<201 mg/dL	ITM
ANA	negative	negative		negative	IFL
AKA	negative			negative	IFL
ASMA	negative			negative	IFL
AMA	1:100 ↑			negative	IFL
AMA-M2	negative	negative		negative	WB
Sp100	negative	negative		negative	WB
LKM1	negative	negative		negative	WB
Gp210	negative	negative		negative	WB
LC1	negative	negative		negative	WB
SLA	negative	negative		negative	WB
Anti-Nucleosomes	negative			negative	WB
Anti-dsDNA	negative			negative	WB
SmD1	negative			negative	WB
Anti-PO	negative			negative	WB
Anti-Histones	negative			negative	WB
U1-SnRNP	negative			negative	WB
Anti-SSA/Ro60	negative			negative	WB
Anti-SSA/Ro52	negative			negative	WB
SSB/La	negative			negative	WB
Anti-Slc-70	negative			negative	WB
Anti-CENP-B	negative			negative	WB
Anti-Jo-1	negative			negative	WB

ISSN: 1750-1172