Simultaneous occurrence of autoimmune pancreatitis and pancreatic cancer in patients resected for focal pancreatic mass

Table 1 Characteristics of patients with autoimmune pancreatitis and autoimmune pancreatitis + pancreatic cancer n (%)

	AIP without PC	AIP with PC	P value
Total	9 (60)	6 (40)
AIP type 1	4 (44)	2 (33)
AIP type 2	5 (56)	4 (67)
Sex (males)	6 (67)	6 (100)
Age	49 (35-64)	60.5 (54-67)	0.045
Smoking	5 (56)	4 (67)
Recent onset of diabetes mellitus	1 (11)	4 (67)	0.090
History of another autoimmune disorder	4 (44)1	0
History of pancreatic disease	5 (56)2	1 (17)3
Jaundice	3 (33)	4 (67)
Weight loss	6 (67)	6 (100)
in kilograms	8.5 (3-12)	15.5 (8-50)	0.030
Location of lesion (head of the pancreas)	8 (89)	5 (83)
Ca 19-9 (normal range 0-27 kU/L)	35.2 (2.5-300)	89.8 (19.8-110)

¹1 × IgG4-related sclerosing cholangitis, 1 × IgG4-related sialadenitis, 1 × Crohn's disease, 1 × Autoimmune thyroiditis;

²2 × Chronic pancreatitis, 3 × Acute pancreatitis;

³1 × Chronic pancreatitis. Quantitative data are expressed as median (range), qualitative data as absolute values with percentages. AIP: Autoimmune pancreatitis; PC: Pancreatic cancer.