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

Table 2 Comparison clinical features of duodenal neuroendocrine tumour patients in ampullary region and nonampullary region

Clinical features	Ampullary region (n = 7)	Nonampullary region (n = 22)	Statistical value	P value
Males/females (n/n)	1/6	9/13	Fisher exact test	0.367
Age at diagnosis (yr)	59.256 ± 11.368	54.546 ± 9.99	t = 1.059	0.299
Tumour size (cm)	2.543 ± 1.316	2.696 ± 1.648	t = -0.223	0.826
Survival time (month)	10 (8, 30)	71.5 (35, 123)	Z = -3.238	0.000
Histological classification and grading, n (%)			Fisher exact probability method = 4.098	0.241
NET-G1	2 (28.6)	12 (54.5)
NET-G2	4 (57.1)	9 (41)
NET-G3	1 (14.3)	0 (0)
NEC	0 (0)	1 (4.5)
Tumour staging, n (%)			Fisher exact probability method = 6.996	0.036
I	2 (28.6)	2 (9.1)
II	11 (14.3)	15 (68.2)
III	2 (28.6)	2 (9.1)
IV	2 (28.6)	3 (13.6)
With/without functional tumours (n/n)	1/6	0/22	Fisher exact test	0.241
With/without surgery (n/n)	5/2	20/2	Fisher exact test	0.238
With/without chemotherapy (n/n)	1/6	5/17	Fisher exact test	0.545
Death/survival (n/n)	6/1	6/16	Fisher exact test	0.011