Table 1.

Cohort characteristics

Characteristics	Variable	Count	(%)
Gender	Female	27	47.4
	Male	20	35.1
	Unknown	10	17.5
Normal	Normal adjacent tissue	15	26.3
	Normal distant tissue	29	50.9
	No normal	10	17.5
	Peripheral blood	3	5.3
Tumor	Metastasis	16	28.1
	Primary	40	70.2
	Unknown	1	1.8
Location	Head	17	29.8
	Tail	14	24.6
	Liver	12	21.1
	Body	2	3.5
	Lymph node	2	3.5
	Multiple primary lesion location	2	3.5
	(Other)	8	14.0
Grade	NETG1	18	31.6
	NETG2	13	22.8
	NETG3	12	21.1
	NEC	14	24.6
Diagnosis	Insulinoma	3	5.3
	MEN1 Syndrome	4	7.0