Table 1.

Clinical and pathologic characteristics of patients (n = 159)

Characteristics	AC		SCC
	No. of patients	%	No. of patients	%	p-value
No. of patients included	82		77
Age (years), median (range)	62.0 (19-82)		64.0(33-88)
< 60	35	42.7	22	28.6	0.024
≥ 60	47	57.3	55	71.4
Sex
Male	51	63.4	72	93.5	< 0.001
Female	31	37.8	5	6.5
Tumor size (n = 157)
< 3 cm	29	35.8	20	26.3	0.061
≥ 3 cm	52	64.2	56	73.7
T (n = 158)
1-2	72	87.8	61	80.3	0.076
3-4	10	12.8	15	19.7
Lymph node metastasis
Negative	49	59.8	47	61.0	0.127
Positive	33	40.2	30	39.0
Stage
I	43	50.6	42	57.8	0.072
II	18	18.1	17	20.0
III	21	20.1	18	22.2
Tumor differentiation
Well	22	26.8	4	5.2	0.031
Moderately	41	50.0	55	71.4
Poorly	19	23.2	18	23.4
Adjuvant treatment
not done	45	54.9	37	45.1	0.241
done	37	45.1	40	51.9
CD44s (n = 149)
Low	36	46.8	6	8.3	< 0.001
High	41	53.2	66	91.7
COX-2 (n = 159)
Low	16	19.5	23	29.9	0.129
High	66	80.5	54	70.1

AC, adenocarcinoma; SCC, squamous cell carcinoma, COX, cyclooxygenase