Table 1.

Characteristics, stage (by 6^th and 7^th editions of the TNM Classification), and OS of patients.

Characteristics			Number	%
Initial population			73	100.0
Lost to follow-up			2	2.7
Postoperative death			9	12.3
Patients studied			62	84.9
Gender
Male			56	90.3*
Female			6	9.7*
Histology
SCC			37	59.7*
AC			25	40.3*
Age (yrs)
Mean (range)			68.34
Range			33-83
TNM Stage
7th edition		IA	14	22.6*
		IB	22	35.5*
		IIA	10	16.1*
		IIB	12	19.4*
		IIIA	4	6.4*
6th edition		I	51	82.3*
		II	5	8.1*
		III	5	8.1*
		IV	1	1.5*
OS (months)
Median for all patients			55.2
Median for SCC patients			33.8
Median for AC patients			25.1

*% of study sample of 62 patients.

AC = adenocarcinoma; OS = Overall Survival; Postoperative death = death<1 month post-surgery; SCC = squamous cell carcinoma; TNM = Tumor, Node and Metastasis classification.