Table 3.

Accuracy of localization studies for surgically proven insulinoma at NIH 1996–2008 according to diagnosis

	Sporadic	MEN-1	Metastatic	Total (%)
CaStim
Correct localization	33/39 (84)	2/3 (67)	3/3 (100)	84
False-negative localization	4/39 (11)	1/3 (33)	0/3	11
False-positive localization	2/39 (5)	0/3	0/3	4
US
Correct localization	6/38 (16)	0/3 (0)	0/2 (0)	14
False-negative localization	27/38 (71)	2/3 (67)	2/2 (100)	72
False-positive localization	5/38 (13)	1/3 (33)	0/2 (0)	14
CT
Correct localization	13/38 (35)	0/3 (0)	1/3 (33)	32
False-negative localization	19/38 (49)	1/3 (33)	2/3 (67)	50
False-positive localization	6/38 (16)	2/3 (67)	0/3 (0)	18
MRI
Correct localization	11/38 (30)	0/3 (0)	0/3 (0)	25
False-negative localization	22/38 (57)	2/3 (67)	3/3 (100)	61
False-positive localization	5/38 (13)	1/3 (33)	0/3 (0)	14

Data are expressed as number of patients/total patients (percentage), unless indicated differently.