Table 1. Clinicopathological characteristics of non-ampullary duodenal tumors.

Clinicopathological features	Vienna classification		P value
	Category 3, n = 73	Category 4, n = 30
Age, mean ± SD, years	62.0 ± 11.3	57.0 ± 13.6	n.s.
Sex, n (%)
Male	44 (60)	18 (60)	n.s.
Female	29 (40)	12 (40)
Location, n (%)
Bulbs	20 (27)	6 (20)	n.s.
Second portion	53 (73)	24 (80)
Tumor size, mean ± SD, mm	10.0 ± 6.0	13.0 ± 5.8	0.02
≤ 10 mm, n (%)	49 (67)	17 (57)
> 10 mm, n (%)	24 (33)	13 (43)
Macroscopic type, n (%)
0-I	12 (16)	8 (27)	n.s.
0-IIa	50 (68)	14 (47)
0-IIa+IIc	4 (6)	3 (10)
0-IIc	7 (10)	5 (16)
Color, n (%)
Reddish	16 (22)	12 (40)	n.s.
Isochromatic	57 (78)	18 (60)
Milk-white mucosa, n (%)
Present	47 (64)	20 (67)	n.s.
Absent	26 (36)	10 (33)