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

Table 2

Immunohistochemical staining.

Parameter	Positive	Total	%
AACT	45	47	95.7%
Vinmentin	37	42	88.1%
AAT	33	40	82.5%
NSE	28	40	70%
PR	23	36	63.9%
Synaptophysin	21	38	55.3%
Ki-67	5	8	62.5%