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Table 2 Comparison of characteristics between benign and malignant pancreatic schwannomas

From: Pancreatic schwannoma: a case report and an updated 40-year review of the literature yielding 68 cases

 

Benign (n = 60)

Malignant (n = 8)

P

Mean age (years)

56.3 ± 14.4 (20–87)

51.1 ± 17.7 (24–74)

0.358

Sex (male/female), (male %)

9:11 (45%)

3:5 (37.5%)

1.000

Mean size (cm)

5.2 ± 4.0 (1–20)

14.0 ± 10.3 (5–33)

0.004

Location

 Uncinate

9 (15%)

0 (0%)

0.228

 Head

22 (37%)

5 (71%)

 Head + body

3 (5%)

0 (0%)

 Body

14 (23%)

0 (0%)

 Body + tail

6 (10%)

2 (29%)

 Tail

6 (10%)

0 (0%)

Nature of tumor on imaging

 Solid

17 (30%)

2 (25%)

0.845

 Cystic

26 (46%)

3 (37.5%)

 Solid + cystic

13 (23%)

2 (25%)

 Not specified

4 (7.1%)

1 (12.5%)

Imaging characteristics

 Well-defined margins

45 (96%)

2 (33%)

0.009

 Presence of calcifications

5 (9.4%)

0 (0%)

1.000

 Pancreatic duct/CBD dilation

2 (9.1%)

0 (0%)

1.000

Relation to nearby structures

 No changes in nearby structures

12 (52%)

0 (0%)

< 0.001

 Compressed/displaced vessels

9 (39%)

0 (0%)

 Encasement of vessels

2 (8.7%)

3 (50%)

 Invasion of viscera

0 (0%)

3 (50%)

Treatment

 Pancreaticoduodenectomy

13 (22%)

3 (37.5%)

 

 Pylorus-preserving pancreaticoduodenectomy

7 (10%)

0 (0%)

 Central pancreatectomy

2 (3.0%)

0 (0%)

 Distal pancreatectomy +/− splenectomy

13 (19%)

1 (12.5%)

 Enucleation

8 (12%)

0 (0%)

 Surgical resection NOS

13 (19%)

2 (25%)

 Unresectable

0 (0%)

2 (25%)

 Refused

3 (4.5%)

0 (0%)

Mean follow-up (months)

19.4 ± 16.0 (3–65)

16.3 ± 11.6 (4–28)

 

Died of disease

0

1

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