Analysis of invasiveness and tumor-associated macrophages infiltration in solid pseudopapillary tumors of pancreas

Table 1 Clinical and pathological characteristics between capsule and invasion solid pseudopapillary tumor patients

	Capsule group, n = 11	Invasion group, n = 11	P value
Age, yr (Median, range)	26 (12, 46)	36 (15, 65)	0.146
Sex (Female)	10	8	0.586
Positive serum tumor marker
CA19-9	0	1	1.000
CA125	0	2	0.476
CEA	0	0	-
NSE	2	5	0.361
Surgical procedure			-
Pancreaticoduodenectomy	1	3
Distal pancreatectomy	5	5
Total pancreatectomy	1	0
Central pancreatectomy	4	3
Combined segmental hepatectomy	0	3
Tumor size (Median, range)	4.8 (2.0-8.1)	4.0 (1.3-8.8)	0.834
Tumor location			1.000
Head and neck	6	5
Body and tail	5	6
Component of the tumor			0.387
Solid	3	6
Solid and cystic	8	5
Calcification	3	2	1.000
Capsule assessed by CT imaging	9	2	0.004
Peripheral organ invasion	0	2	0.476
Metastasis	0	4a	0.045
Lymph node	0	1
Liver	0	3
Spleen	0	1
Ki-67 Index > 3%	0	4	0.045

^a1 patient had both spleen and lymph node metastasis.

CEA: Carcino-embryonic antigen; CT: Computed tomography; NSE: Neuron-specific enolase.