Factors Related to Long-Term Survival in Patients Affected by Well-Differentiated Endocrine Tumors of the Pancreas

Table 1

Characteristics of the 74 patients who underwent R0 pancreatic resection for well-differentiated pancreatic endocrine tumors.

Factors	No. (%)
Sex
M	35 (47.3)
F	39 (52.7)
Age
<55 years	35 (47.3)
≥55–65 years	39 (52.7)
Comorbidities
None	47 (63.5)
One or more	27 (36.5)
Symptoms
No	19 (25.7)
Yes	55 (74.3)
Hormonal status
Nonfunctioning	40 (54.1)
Insulinoma	25 (33.8)
Others	9 (12.1)
MEN-1
No	67 (90.5)
Yes	7 (9.5)
Size of tumors
<2 cm	30 (40.5)
2–4 cm	24 (32.4)
>4 cm	20 (27.0)
Lymph node status
N0	49 (66.2)
N1	17 (23.0)
Nx	8 (10.8)
Type of resection
Typical	54 (73.0)
Atypical	20 (27.0)
WHO classification
WDT-B	24 (32.4)
WDT-UB	21 (28.4)
WDEC	29 (39.2)
TNM stage^*
I	26 (35.1)
II	26 (35.1)
III	22 (29.8)

WDT-B: well-differentiated tumor-benign; WDT-UB: well-differentiated tumor-uncertain behaviour; WDEC: well-differentiated carcinoma.
^*TNM-ENETS stage system modified according to Scarpa et al. [5].