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

Table 2

The clinicopathological analysis between cases with and without LNM among T2 cancers.

	Cases with LNM	Cases without LNM	value
Case number	27	88
Age, years; mean (range)	65.2 ± 12.3 (37–83)	68.8 ± 10.3 (37–94)	0.201
Sex (male/female) %, (n)	54.5 (14)/45.5 (13)	55.7 (48)/44.3 (40)	0.922
Location (colon/rectum) %, (n)	29.6 (8)/70.4 (19)	58.0 (50)/42.0 (38)	0.013
Tumor size, mm; mean(range)	33.9 ± 14.9 (15–78)	28.1 ± 12.0 (12–70)	0.072
Tumor size ≥25 mm %, (n)	77.8 (21)	55.7 (49)	0.039
Lymphatic invasion %, (n)	81.5 (22)	36.4 (32)	<0.001
Venous invasion %, (n)	66.7 (18)	46.6 (41)	0.067
Budding grade 2/3%, (n)	55.6 (15)	33.0 (29)	0.034
Poor histology %, (n)	51.9 (14)	19.3 (17)	0.008
PWDA %, (n)	3.7 (1)	25.0 (22)	0.015

LNM: lymph node metastasis; PWDA: pure well-differentiated adenocarcinoma.