International Consensus Diagnostic Criteria for Autoimmune Pancreatitis and Its Japanese Amendment Have Improved Diagnostic Ability over Existing Criteria

Table 6

Comparison of diagnostic abilities of the ICDC and JPS-2011 related to mismatched cases.

ICDC				JPS-2011
				Definitive	Probable	Possible	No diagnosis
Number				2	2		3
Diagnosis	Primary basis	Imaging evidence	Collateral evidence
	Histology	Typical/indeterminate	L1 histology
			L1/L2 serology
	Imaging	Typical	L1/L2 OOI
			L1/L2 serology/OOI
			L2 histology
			L1 serology + L1 OOI				3
(1) Definitive; type 1 AIP		Indeterminate	L2 ERP + L1 serology		1
			L2 ERP + L1 OOI		1
			L1 serology + Rt
			L1 OOI + Rt
	Response to steroid	Indeterminate	L1 ERP + L2 serology + Rt
			L1 ERP + L2 OOI + Rt
			L1 ERP + L2 histology + Rt
			L2 serology + Rt	1
(2) Probable; type 1 AIP		Indeterminate	L2 OOI + Rt
			L2 serology/L2 OOI + Rt	1
			L2 histology + Rt
(3) AIP-not otherwise; specified		Typical	L1/2 ERP + Rt
		Indeterminate	L1/2 ERP + Rt
(4) No diagnosis

L1 and 2: levels 1 and 2; OOI: other organ involvement; ERP: endoscopic retrograde pancreatography; Rt: response to steroid.