Table 1.

Patient information. Correlations between mutations and clinical and histopathologic parameters of IPMNs.

		N (total)	KRAS mutation		P	GNAS mutation		P
			n	%		n	%
Age (years)	<65	29	22	75.9	0.42	18	62.1	0.62
	≥65	103	85	82.5		69	67
Gender	Male	70	58	82.9	0.58	51	72.9	0.07
	Female	62	49	79		36	58.1
History of smoking	Yes	25	21	84	0.77	17	68	0.85
	No	37	30	81.1		26	70.3
Grade	Low	23	20	87	0.43 (low versus others)	11	47.8	0.04 (low versus others)
	Intermediate	51	46	90.2		34	66.7
	High	58	41	70.7		42	72.4
Duct type	Main	35	23	65.7	0.002 (main versus branch)	24	68.6	0.37 (main versus branch)
	Branch	64	58	90.6		38	59.4
	Mixed	28	21	75		20	71.4
Subtype	Gastric	52	45	86.5	0.02 (pancreatobiliary versus intestinal)	34	65.4	0.002 (pancreatobiliary versus intestinal)
	Pancreatobiliary	7	7	100		3	42.9
	Intestinal	13	6	46.2		13	100
Diameter (cm)	<3	62	49	79	0.58	41	66.1	0.96
	≥3	70	58	82.9		46	65.7
Location	Proximal (head)	77	64	83.1	0.44 (proximal versus distal)	53	68.8	0.38 (proximal versus distal)
	Distal (body, tail)	49	38	77.6		30	61.2
	Proximal and distal	6	5	83.3		4	66.7
Associated cancer	Yes	24	18	75	0.4	18	75	0.3
	No	108	89	82.4		69	63.9