Table II.

Comparison of clinicopathological findings between patients with main duct-type IPMN and branch duct-type IPMN.

Characteristic	Main duct-type IPMN (n=33)	Branch duct-type IPMN (n=67)	P-value
Tumor marker, blood chemistry
Carcinoembryonic antigen (ng/ml)	3.0±3.0	2.7±2.1	0.566
Carbohydrate antigen 19–9 (U/ml)	55.5±88.0	48.1±182.7	0.850
Surgical period
Immediately (%)	81.8	53.7	0.027
Follow-up (%)	18.2	46.3
Follow-up, median years (range)	1.6 (1–2)	3.6 (1–10)	0.021
Surgical procedure (n)
Total pancreatectomy	4	2	0.143
Pancreaticoduodenectomy	17	31
Distal pancreatectomy	10	24
Minimal invasive surgery	0	10
Pathology
Adenoma	10	55
Non-invasive carcinoma	14	3	0.001
Invasive carcinoma	9	9

IPMN, intraductal papillary mucinous neoplasm.