Imaging features of solid pseudopapillary tumor of the pancreas on multi-detector row computed tomography

Table 3 Correlation between tumor size and aggressive behaviors in SPTs

Tumor size	Vascular involvement		Metastasis		Capsular invasion
	Positive	Negative	Positive	Negative	Positive	Negative
< 6 cm	1	10	0	11	0	6
≥ 6 cm	8	5	13	10	9	4

Fisher’s exact test: P = 0.013 for vascular involvement; P = 0.001 for capsular invasion.

¹2 cases with lymph node metastasis and 1 case with lymph node metastasis and hepatic metastasis.