Main Diagnostic Criteria Usually Does Not Work for Autoimmune Pancreatitis Wrongly Presuming Malignancy

Table 2

Imaging characteristics of patients with AIP.

Patient no.	1	2	3	4	5
Diffusely enlarged gland	-	-	+	+	-
Capsule-like rim	-	-	-	-	-
Focally enlarged gland	+	+	-	-	-
Low-density mass	-	-	-	+	+
Pancreatic ductal dilatation (≥3 mm)	-	+	-	-	-
Pancreatic duct cutoff	-	-	-	-	-
Upstream parenchymal atrophy	-	+	-	-	-
Bile duct incrassation (≥3 mm)	+	+	-	-	+
Bile duct stricture	+	+	-	-	-
Radiologic diagnosis	dCCA	dCCA	Ampullary carcinoma	NET	PDAC

dCCA: distal cholangiocarcinoma; NET: neuroendocrine tumor; PaC: pancreatic ductal adenocarcinoma.