Table 4.

Changes of T category and stage group in 7-TNM and 8-TNM

(A) T category
		8-TNM							Total
		T1a	T1b	T1c	T2a	T2b	T3	T4
7-TNM	T1a	2	3	0	0	0	0	0	5 (7.8%)
	T1b	0	0	3	4	1	0	0	8 (12.5%)
	T2a	0	0	4	3	3	0	0	10 (15.6%)
	T2b	0	0	0	0	1	7	0	8 (12.5%)
	T3	0	0	1	1	4	5	5	16 (25%)
	T4	0	0	0	0	0	2	15	17 (26.6%)
Total		2 (3.1%)	3 (4.7%)	8 (12.5%)	8 (12.5%)	9 (14.1%)	14 (21.9%)	20 (31.3%)
(B) Stage group
		8-TNM							Total
		IB	IIB		IIIA	IIIB	IIIC
7-TNM	IB	1	0		0	0	0		1 (1.6%)
	IIA	0	1		0	0	0		1 (1.6%)
	IIB	0	1		2	0	0		3 (4.7%)
	IIIA	0	1		18	10	0		29 (45.3%)
	IIIB	0	0		0	22	8		30 (46.9%)
Total		1 (1.6%)	3 (4.7%)		20 (31.3%)	32 (50%)	8 (12.5%)

7-TNM seventh American Joint Committee on Cancer TNM staging system, 8-TNM eighth American Joint Committee on Cancer TNM staging system