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Table 1 Summary of clinicopathological data from all 68 cases of pancreatic schwannoma [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64]

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

 

n (%) or mean ± SD (range)

Age (years) (n = 68)

 Mean

55.7 ± 14.7 (20–87)

Sex (male/female), (male %) (n = 68)

15:19 (44%)

Symptoms (n = 68)

 Asymptomatic

23 (34%)

Symptoms

 Abdominal pain

34 (50%)

 Weight loss

12 (18%)

 Nausea/vomiting

6 (8.8%)

 Dyspepsia

5 (7.4%)

 Back pain

4 (5.9%)

 Abdominal mass

3 (4.4%)

 Anemia

2 (2.9%)

 Melena

2 (2.9%)

 Jaundice

2 (2.9%)

Mean size (cm) (n = 64)

6.1 ± 5.7 (1–33)

Location (n = 67)

 Uncinate

9 (13%)

 Head

27 (40%)

 Head + body

3 (4.5%)

 Body

14 (21%)

 Body + tail

7 (10%)

 Tail

6 (9.0%)

Nature of tumor on imaging (n = 68)

 Solid

19 (28%)

 Cystic

29 (43%)

 Solid + cystic

15 (22%)

 Not specified

5 (7.4%)

Imaging characteristics

 Well-defined margins (n = 59)

47 (80%)

 Presence of calcifications (n = 58)

5 (8.6%)

 Pancreatic duct/CBD dilation (n = 22)

2 (9.1%)

Relation to nearby structures (n = 29)

 No changes to nearby structures

12 (41%)

 Compressed/displaced vessels

9 (31%)

 Encasement of vessels

4 (14%)

 Invasion of viscera

3 (10%)

Preoperative diagnosis (n = 44)

 Correct

9 (20%)

 Incorrect

35 (80%)

 Cystic neoplasm

17 (49%)

 Serous cystic neoplasm

3 (8.6%)

 Mucinous cystic neoplasm

8 (23%)

 Solid pseudopapillary neoplasm

7 (20%)

 Pancreatic neuroendocrine tumor

8 (23%)

 Pseudocyst

2 (5.7%)

 Acinar cell carcinoma

3 (8.6%)

 Mucinous cystadenocarcinoma

6 (17%)

Treatment (n = 67)

 Pancreaticoduodenectomy

16 (24%)

 Pylorus-preserving pancreaticoduodenectomy

7 (10%)

 Central pancreatectomy

2 (3.0%)

 Distal pancreatectomy +/− splenectomy

15 (22%)

 Enucleation

8 (12%)

 Surgical resection not otherwise specified (NOS)

14 (21%)

 Unresectable

2 (3.0%)

 Refused

3 (4.5%)

Histology (n = 68)

 Benign

60 (88%)

 Malignant

8 (12%)

Mean follow-up (months) (n = 34)

19 ± 15.4 (3–65)

Died of disease

1