Expression of proliferating cell nuclear antigen and CD44 variant exon 6 in primary tumors and corresponding lymph node metastases of colorectal carcinoma with Dukes' stage C or D

Table 1 Characteristics of patients with Dukes’ stage C or D colorectal carcinoma

Gender	Male	30
	Female	26
Age(yrs) (mean ± SD)	51.3 ± 14.2
Histology	Papillary adenocarcinoma	12
	Tubular adenocarcinoma	27
	Mucinous adenocarcinoma	10
	Signet-ring cell carcinoma	5
	Undifferentiated carcinoma	2
Dukes’ classification	Stage C	49
	Stage D	7

Table 2 Expression of PCNA in colorectal carcinoma at primary sites and metastatic lymph nodes

Metastatic lymph nodes	Primary sites
	-	+
-	13	7
+	12	24

Note: χ² = 5.21, 0.010 < P < 0.025.

Table 3 Expression of CD44v6 in colorectal carcinoma at primary sites and metastatic lymph nodes

Metastatic lymph nodes	Primary sites
	-	+
-	9	8
+	6	33

Note: χ² = 6.71, 0.005 < P < 0.010.

Table 4 Expression of PCNA and CD44v6 in colorectal carcinoma at primary sites

PCNA	CD44v6
	-	+
-	5	20
+	10	21

Note: χ² = 1.06, 0.250 < P < 0.500