Table 1.

Comparison of Patient Clinical Characteristics and laboratory results preoperatively in patients with or without imaging positive studies.

Characteristic	Number (%)
	IMAGE NEG	IMAGE POS	Significance
Total number	58	117
Male	33 (57%)	76 (65%)	NS
Ages (yrs)
Age ZES onset (yrs)
Mean ± SEM	42.6 ± 1.6	41.7 ± 1.1	NS
[range]	[14.3-64.9]	[11.0-64.6]
Age ZES Diagnosis (yrs)
Mean ± SEM	48.8 ± 1.4	47.8 ± 0.9	NS
[range]	[14.2-67.9]	[15.0-69.4]
Main Presenting symptoms (%)
Pain	48(83%)	101(86%)	NS
Diarrhea	46 (79%)	94 (80%)	NS
GERD	32 (55%)	44 (38%)	NS
MEN1 present	0 (0%)	0 (0%)	NS
Previous abdominal surgery	6 (10%)	51(44%)	<0.0001
Acid related surgery	2 (3.4%)	25(21%)	0.0021
Hiatal hernia repair	5 (8.6%)	1(0.8%)	0.0081
Other	1 (1.7%) (a)	27 (23%) (a)	<0.0001
Fasting gastrin level (pg/mL)
Mean ± SEM	1198 ± 449	3713 ± 1555
median	522	673
[range]   >10-fold increased	[144-26,000] 9 (15.5%)	[78-175,300] 40 (34%)	0.0099
Delta Secretin
Mean ± SEM	4558 ± 2370	4590 ± 1188	NS
median	657	806
[range]	[88-103,000]	[40-101,650]
BAO (mEq/Hr)
Mean ± SEM	42.8 ± 2.9 (b)	46.6 ± 2.4(b)	NS
[range]	[17.9-95]	[11.1-159]

^(a)1 patient in imaging negative group had l nephrectomy for renal cell cancer. In the imaging positive group 3 had a colectomy for colon cancer, 8 had an appendectomy, 5 hysterectomy, 5 cholecystectomy, 2 negative laparotomy for PET, 2 for small bowel obstruction, 1 for renal cell cancer, 1 for small bowel perforation after radiological procedure.

^(b)Basal acid output data are shown for patients without previous acid related surgical procedures and include data from 49 patients in imaging negative and 95 patients in imaging positive groups.