Multiphase computed tomography radiomics of pancreatic intraductal papillary mucinous neoplasms to predict malignancy

Table 6 Distribution of International Consensus Guidelines criteria in benign vs malignant intraductal papillary mucinous neoplasm cases

	Benign	Malignant	P value
	n = 22	n = 29
Morphology (duct)
Main/mixed	2	17	< 0.001
Side branch	20	12	< 0.001
High risk stigmata (1 or more)	3	18	< 0.001
Enhancing solid component > 5 mm	3	15	0.005
Main duct ≥ 10 mm	0	5	0.04
Obstructive jaundice	0	1	0.379
Worrisome features (1 or more)	10	28	< 0.001
Cyst ≥ 3 cm	7	21	0.004
Thickened enhancing cyst wall	2	11	0.019
Enhancing mural nodule < 5 mm	2	10	0.034
Main pancreatic duct 5-9 mm	3	12	0.039
Lymphadenopathy	1	12	0.003
Abrupt change in caliber of pancreatic duct with distal atrophy	1	4	0.445
Cyst growth rate ≥ 5 mm in two years			NA1
Elevated Ca19-9	3/14	8/24	0.557

¹Adequate historical imaging was widely unavailable.