Self-expanding metal stent placement and pathological alterations among obstructive colorectal cancer cases

Table 3 Pathological features of patients with colorectal cancer according to decompression methods

Characteristic1	All cases (n = 102)	Decompression methods		P value2,3
		Transanal tube (n = 76)	SEMS (n = 26)
Lymphatic invasion, n (%)				0.12 (0.020)
Absent	11 (11)	10 (13)	1 (3.9)
Minimal	41 (40)	33 (43)	8 (31)
Moderate	32 (31)	23 (30)	9 (35)
Severe	18 (18)	10 (13)	8 (31)
Venous invasion, n (%)				< 0.0001 (0.0002)
Absent	19 (19)	17 (22)	2 (7.7)
Minimal	45 (44)	37 (49)	8 (31)
Moderate	23 (23)	19 (25)	4 (15)
Severe	15 (15)	3 (4.0)	12 (46)

¹Percentage indicates the proportion of patients with a specific clinical characteristic among all patients or in strata of decompression methods.

²We used the chi-square test to compare as categorical variables. We adjusted the two-sided α level to 0.05.

³We used the Mann-Whitney U test to compare as nonparametric continuous variables. We adjusted the two-sided α level to 0.05.

SEMS: Self-expanding metal stent.