Table 6.

CD133 positive Epithelial/Mesenchymal Circulating Tumor Cells (E/M-CTC) and baseline characteristics of patients [n (%)]

	CD133 positive E/M-CTC		P
	≥1 (n=44)	<1 (n=19)
Age (years)
≥60	20 (45.45)	15 (78.95)	0.014
<60	24 (54.55)	4 (21.05)
Gender
Male	30 (68.18)	11 (57.89)	0.432
Female	14 (31.82)	8 (42.11)
The maximum diameter of the tumor
≥5 cm	17 (38.64)	10 (52.63)	0.303
<5 cm	27 (61.36)	9 (47.37)
TNM stage
I-II	5 (11.36)	2 (10.53)	0.923
III-IV	39 (88.64)	17 (89.47)
Degree of differentiation
High	3 (6.82)	2 (10.53)	0.881
Intermediate	34 (77.27)	14 (73.68)
Low	7 (15.91)	3 (15.79)
Lymphatic metastasis
Yes	38 (86.36)	15 (78.95)	0.460
No	6 (13.64)	4 (21.05)
Distant metastasis
Yes	15 (34.09)	2 (10.53)	0.053
No	29 (65.91)	17 (89.47)
CEA
<5 ng/mL	35 (79.55)	17 (89.47)	0.341
≥5 ng/mL	9 (20.45)	2 (10.53)
CA-199
<35 U/mL	35 (79.55)	17 (89.47)	0.341
≥35 U/mL	9 (20.45)	2 (10.53)

CEA, carcinoembryonic antigen.