Table 4 Five-year rates of development of ductal carcinoma distinct from IPMN in subgroups of IPMN analysed by the Kaplan–Meier method
Subgroups5-year rate of development of ductal carcinoma (95% CI)p Value
Male/female3.3 (0.0 to 9.8)/10.9 (0.0 to 22.5)0.32
Over 70/under 69 years old19.4 (2.3 to 36.5)/0.0 (0.0 to 0.0)0.01
MD >4 mm/<3 mm3.0 (0.0 to 8.9)/11.9 (0.0 to 24.5)0.11
BDs >30 mm/<29 mm8.3 (0.0 to 24.0)/6.5 (0.0 to 13.6)0.76
IDT >3 mm/<2 mm20.0 (0.0 to 55.1)/5.7 (0.0 to 11.9)0.38

  • BDs, branch ducts; IDT, intraductal tumour; IPMN, intraductal papillary mucinous neoplasm; MD, main duct.