Solid Pseudopapillary Neoplasm of the Pancreas: Clinicopathologic Feature, Risk Factors of Malignancy, and Survival Analysis of 53 Cases from a Single Center

Table 3

Predictive factors of malignant SPN.

Factor	Benign	Malignant	value
Average age	34.1 ± 12.0	41.0 ± 17.8	NS
Average BMI	23.6 ± 2.5	24.1 ± 1.9	NS
Gender			NS
Male	6	1
Female	37	9
Symptoms			NS
Present	27	4
Absent	16	6
Serum tumor marker			NS
Elevated	37	10
Normal	6	0
Average tumor size (cm)			NS
<5 cm	20	2
>5 cm	23	8
Tumor location			NS
Head	12	3
Body and tail	27	5
Neck	4	1
Extrapancreatic site	0	1
Calcification condition			NS
Calcification	11	4
Noncalcification	32	6
Component of tumor			NS
Solid and cystic	13	5
Solid	19	4
Cystic	11	1
Pattern of capsule
Complete capsule	42	3
Incomplete capsule	1	7