Table 3.

Surgical findings

Characteristic	Number (%)
Patient numbers
Total number patients entered	46
Number undergoing surgery	44 (100%)(a)
Number tumor resected	42 (91%) (b)
Age surgery (yrs)
Mean ± SEM	49 ± 2
[range]	[27.5-81)
Duration diagnosis to surgery (yrs)
Mean ± SEM	5.3 ± 1.1
[range]	[0.1-18.8]
Primary PET location/size (surgery)
Location
Pancreas	30 (68%)
Duodenum	12 (27%)
Other	5 (11%)(c)
Largest Primary size (cm)
Mean ± SEM	5 ± 0.6
[range]	[0.4-15]
Metastases found at surgery
Lymph node involvement	31 (70%)
Liver metastases	18 (41%)(d)
Tumor extent at surgery
Primary only	8 (18%)
Primary plus lymph node involvement	31 (70%)
With liver involvement	20 (48%)(d)
Invasion/encasement of major vessel	15 (36%)(e)

^(a)Two patients refused surgery.

^(b)Two patients with gastrinomas had unresectable disease. One with diffuse peritoneal implants/diffuse small liver metastases and the second with complete encasement of the IVC/portal vein with arterial invasion with bleeding. The number of patients undergoing surgery was used as 100% in this table.

^(c)Other refers to 1 patient with a primary gastrinoma in the bile duct (n=1), liver (n=2), heart (n=1) and lymph node (n=1).

^(d)Two patients had primary gastrinoma of the liver.

^(e)One patient had invasion of the heart by a gastrinoma, twelve encasement of the SMV or PV, one SMA and one involvement of the IVC.