Pure Well-Differentiated Adenocarcinoma Is a Safe Factor for Lymph Node Metastasis in T1 and T2 Colorectal Cancer: A Pilot Study

Table 5

The relationship of LNM between PWDA and lymphatic or venous invasion in T1 cancers.

	Lymphatic or venous invasion	N	LNM % [95% CI], (n)
PWDA; 73 cases	Negative	44	0.0 [0–8.0] (0)
	Positive	29	0.0 [0–12.0] (0)
Non-PWDA; 129 cases	Negative	61	11.5 [4.7–22.0] [7]
	Positive	68	14.7 [7.3–25.4] [10]

vs. , . PWDA: pure well-differentiated adenocarcinoma; LNM: lymph node metastasis; CI: confidence interval.