Online calculator for predicting the risk of malignancy in patients with pancreatic cystic neoplasms: A multicenter, retrospective study

Table 2 Preoperative imaging characteristics of patients with pancreatic cystic neoplasms

Characteristic	Training cohort	Validation cohort	P value
	n = 187 (64.5%)	n = 103 (35.5%)
Tumor involve the head of pancreas			0.239
Yes	65 (34.8)	43 (41.7)
No	122 (65.2)	60 (58.3)
Bile duct dilation			0.106
No	174 (93.0)	90 (87.4)
Yes	13 (7.0)	13 (12.6)
Tumor size in mm			0.254
< 40	158 (84.5)	92 (89.3)
≥ 40	29 (15.5)	11 (10.7)
Intratumoral septum			0.264
No	76 (40.6)	35 (34.0)
Yes	111 (59.4)	68 (66.0)
Cyst wall enhancement			0.244
No	118 (63.1)	72 (69.9)
Yes	69 (36.9)	31 (30.1)
Cyst wall thickening			0.709
No	178 (95.2)	97 (94.2)
Yes	9 (4.8)	6 (5.8)
Enhanced mural nodules			0.126
No	148 (79.1)	89 (86.4)
Yes	39 (20.9)	14 (13.6)
Intracapsular calcification			0.117
No	162 (86.6)	82 (79.6)
Yes	25 (13.4)	21 (20.4)
Main pancreatic duct dilatation			0.419
No	122 (65.2)	72 (69.9)
Yes	65 (34.8)	31 (30.1)