Solid pseudopapillary tumor of the pancreas in male patients: Report of 16 cases

Table 1 Demographic characteristics of patients n (%)

Variable	Group 1	Group 2	P value
Cases	100	16	-
Age (yr)	33.1 ± 11.5	43.1 ± 12.3	0.043
Tumor size (cm)	6.5 ± 3.5	5.8 ± 2.0	NS
Symptoms			NS
Abdominal pain	41 (41)	6 (37.5)
Abdominal discomfort	17 (17)	2 (12.5)
Palpable abdominal mass	17 (17)	0
No symptoms	24 (24)	8 (50.0)
Jaundice	1 (1)	0
Location of tumors			NS
Head	31 (31)	7 (43.7)
Neck	21 (21)	2 (12.5)
Body and Tail	6 (6)	2 (12.5)
Tail	37 (37)	5 (31.3)
The uncinate process	4 (4)	0
Head and tail	1 (1)	0

Data are means with standard deviations in brackets or numbers with percentages in parentheses unless otherwise indicated. NS: Not significant.

Table 2 Surgical details n (%)

Variables	Group 1	Group 2	P value
	(n = 100)	(n = 16)
Surgical strategies			NS
Pancreaticoduodenectomy	29 (29)	5 (31.3)
Middle pancreatectomy	13 (13)	2 (12.5)
Distal pancreatectomy	17 (17)	2 (12.5)
Distal pancreatectomy with splenectomy	23 (23)	5 (31.3)
Enucleation	16 (16)	2 (12.5)
Enucleation + distal pancreatectomy	1 (1)	0
Cholangiojejunostomy without tumor resection	1 (1)	0
Organ-preserving operation	46 (46)	6 (37.5)	NS
Vessel involvement and metastases
Vessel involvement	29 (29)	3 (18.8)
Pancreatic tissue infiltration	6 (6)	2 (12.5)
Adjacent organs compromised	2 (2)	1 (6.3)
Liver metastases	5 (5)	0
Total	31 (31)	4 (25)	NS

Data are numbers with percentages in parentheses; NS: Not significant.

Table 3 Post-operative complications n (%)

Variables	Group 1	Group 2	P value
	(n = 100)	(n = 16)
Complications
Pancreatic fistula	11(11)	2 (12.5)
Incision infection	2 (2)	0
Fluid collection in abdomen	3 (3)	0
Pulmonary infection	3 (3)	0
Alimentary tract hemorrhage	1 (1)	0
Total	20 (20)	2 (12.5)	NS

Data are numbers with percentages in parentheses; NS: Not significant.

Table 4 Comparison between benign and malignant solid pseudopapillary tumors n (%)

Variables	Benign SPT	Malignant SPT	P value
	(n = 81)	(n = 35)
Gender (M/F)	12/69	4/31	NS
Age (yr)	36.4 ± 3.3	31.8 ± 5.9	NS
Tumor size			0.001
< 5 cm	38 (46.9)	5 (14.3)
≥ 5 cm	43 (53.1)	30 (86.7)
Mean tumor size	4.5 ± 1.9	7.6 ± 3.7	0.035
Location of SPT			NS
Head	28 (34.7)	10 (28.6)
Neck	19 (23.4)	4 (11.4)
Body and tail	4 (4.9)	4 (11.4)
Tail	26 (32.1)	16 (45.7)
The uncinate process	4 (4.9)	0
Multiple locations	0	1 (2.9)

Data are means with standard deviations in brackets or numbers with percentages in parentheses unless otherwise indicated; NS: Not significant; SPT: Solid pseudopapillary tumor; F: Female; M: Male.