Table 1.

Clinicopathological characteristics of the IPMN Study Cohort

	Total (n=15)	IPMN with low-grade dysplasia (n=3)	IPMN with moderate-grade dysplasia (n=2)	IPMN with high-grade dysplasia (n=7)	Carcinoma arising from IPMN (n=3)
Median age (years)	74	76	72	74	76
Gender (%)
Male	9 (60)	2 (66.7)	1 (50)	3 (42.9)	3 (100)
Female	6 (40)	1 (33.3)	1 (50)	4 (57.1)	0
Clinical presentation (%)
Symptomatic	9 (60)	2 (66.7)	1 (50)	4 (57.1)	2 (66.7)
Incidental Finding	6 (40)	1 (33.3)	1 (50)	3 (42.9)	1 (33.3)
Location (%)
Head	7 (43.8)	0	1 (50)	4 (50)	2 (66.7)
Uncinate process	3 (18.8)	1 (33.3)	1 (50)	1 (12.5)	0
Body	3 (18.8)	1 (33.3)	0	2 (25)	0
Tail	2 (12.5)	1 (33.3)	0	1 (12.5)	0
Diffuse	1 (6.2)	0	0	0	1 (33.3)
Biliary stent (%)
Yes	1 (6.7)	0	0	0	1 (33.3)
No	14 (93.3)	3 (100)	2 (100)	7 (100)	2 (66.7)
Median CA 19–9 (U/mL)	18.1	18.2	42.3	15.1	24.3
Post-op tumor size (%)
<3 cm	14 (87.5)	2 (66.7)	2 (100)	7 (87.5)	3 (100)
≥3 cm	2 (12.5)	1 (33.3)	0	1 (12.5)	0
Tumor stage (%)
Tis	5 (31.3)	0	0	5 (62.5)	0
T1	2 (12.5)	0	1 (50)	0	1 (33.3)
T2	1 (6.2)	0	0	0	1 (33.3)
T3	1 (6.2)	0	0	0	1 (33.3)
Unspecified	7 (43.8)	3 (100)	1 (50)	3 (37.5)	0
Lymph node metastasis (%)
N0	9 (56.2)	0	1 (50)	5 (62.5)	3 (100)
Unspecified	7 (43.8)	3 (100)	1 (50)	3 (37.5)	0
Duct involvement
Main duct	4 (25)	1 (33.3)	1 (50)	2 (25)	0
Branch ducts	1 (6.2)	0	0	1 (12.5)	0
Mixed	3 (18.8)	0	1 (50)	2 (25)	0
None	4 (25)	1 (33.3)	0	2 (25)	1 (33.3)
Unspecified	4 (25)	1 (33.3)	0	1 (12.5)	2 (66.7)
Subtype
Pancreatobiliary	6 (37.5)	2 (66.7)	1 (50)	2 (25)	1 (33.3)
Intestinal	2 (12.5)	0	0	1 (12.5)	1 (33.3)
Foveolar/Intestinal	1 (6.2)	0	0	1 (12.5)	0
Intestinal/Pancreatobiliary	1 (6.2)	0	0	1 (12.5)	0
Intestinal/Gastric	1 (6.2)	0	0	1 (12.5)	0
Gastric/Pancreatobiliary	1 (6.2)	0	1 (50)	0	0
Unspecified	4 (25)	1 (33.3)	0	2 (25)	1 (33.3)