Clinical features and prognostic factors of duodenal neuroendocrine tumours: A comparative study of ampullary and nonampullary regions

Table 4 Basic information of nonampullary duodenal neuroendocrine tumours patients, n (%)

Clinical features	Tumour size (diameter)
	< 2 cm (n = 8)	≥ 2 cm (n = 14)
Gender
Males	12.5 (1/8)	57.1 (8/14)
Females	87.5 (7/8)	42.9 (6/14)
Age at diagnosis
Median age (yr)
< 65	75 (6/8)	85.7 (12/14)
≥ 65	25 (2/8)	14.3 (2/14)
Symptoms
Abdominal pain	12.5 (1/8)	57.1 (8/14)
Abdominal distension	12.5 (1/8)	85.7 (12/14)
Acid reflux	25 (2/8)	0 (0/14)
Nausea	0 (0/8)	14.3 (2/14)
Vomiting	0 (0/8)	7.1 (1/14)
Black stools	0 (0/8)	14.3 (2/14)
Poor appetite	0 (0/8)	14.3 (2/14)
No symptoms	50 (4/8)	14.3 (2/14)
Histological classification and grading
NET-G1	62.5 (5/8)	50 (7/14)
NET-G2	25 (2/8)	50 (7/14)
NET-G3	0 (0/8)	0 (0/14)
NEC	12.5 (1/8)	0 (0/14)
Tumour staging
I	25 (2/8)	0 (0/14)
II	75 (6/8)	64.3 (9/14)
III	0 (0/8)	14.3 (2/14)
IV	0 (0/8)	21.4 (3/14)
Surgery
Yes	100 (8/8)	85.7 (12/14)
No	0 (0/8)	14.3 (2/14)
Postoperative chemotherapy
Yes	12.5 (1/8)	28.6 (4/14)
No	87.5 (7/8)	71.4 (10/14)
Survival status
Death	0 (0/8)	42.9 (6/14)
Survival	100 (8/8)	57.1 (8/14)