Table 4.

Five-year survival rates using 6^th and 7^th TNM editions, showing median overall survival and percentage survival

TNM Stage		Number	Patients	MOS (months)	%survivors
6th TNM edition	I	59	41 survivors	35.5	80.4
			10 non-survivors	23.1
			7 postop deaths	-
			1 lost to follow-up	-
	II	6	3 survivors	25.7	60
			2 non-survivors	14
			1 postop deaths	-
	III	7	1 survivor	16	20
			4 non-survivors	21
			1 postop death	-
			1 lost to follow-up	-
	IV	1	1 survivor	30	100
7th TNM edition	IA	14	12 survivors	34	85.7	83.3
			2 non-survivors	27.5
	IB	25	18 survivors	34.2	81.8
			4 non-survivors	19.8
			2 postop deaths	-
			1 lost to follow-up	-
	IIA	14	7 survivors	42.9	70	68.2
			3 non-survivors	16.3
			4 postop deaths	-
	IIB	14	8 survivors	30	66.7
			4 non-survivors	24.3
			2 postop deaths	-
	IIIA	6	1 survivors	16	25
			3 non-survivors	10.5
			1 postop death	-
			1 lost to follow-up	-

MOS = median overall survival; Postop death = death<1 month post-surgery; TNM = Tumor, Node and Metastasis classification.