Pancreatic schwannoma: Case report and an updated 30-year review of the literature yielding 47 cases

Table 2 Summary of clinicopathological data from all 47 cases of pancreatic schwannoma

	n (%) or mean ± SD (range)
Age (yr)	55.7 ± 15.1 (20-87)
Sex (male/female), (male %)	21/26 (45%)
Symptoms1
Asymptomatic	14 (30%)
Symptomatic
Abdominal pain	27 (57%)
Weight loss	6 (13%)
Back pain	3 (6%)
Nausea/vomiting	2 (4%)
Abdominal mass	2 (4%)
Anemia	2 (4%)
Melena	2 (4%)
Jaundice	1 (4%)
Location
Head	19 (40%)
Head/body	3 (6%)
Body	10 (21%)
Body/tail	7 (15%)
Tail	2 (4%)
Uncinate process	6 (13%)
Mean size (cm), (n = 44)	6.2 ± 5.1 (1-20)
Operation
Pancreaticoduodenectomy2	15 (32%)
Distal pancreatectomy3	10 (21%)
Enucleation	7 (15%)
Unresectable	2 (4%)
Refused	1 (2%)
Not specified	12 (26%)
Histology
Malignant	5 (11%)
Benign	41 (87%)
Not specified	1 (2%)
Nature of tumor
Solid	16 (34%)
Cystic	28 (60%)
Not specified	3 (6%)
Mean follow-up months (n = 23)	18.9 ± 15.7 (3-65)
Died of disease	0 (0%)

¹Patients had several symptoms;

²One patient underwent resection of portal vein;

³One patient underwent resection of transverse colon.