Table 1.

Stage cancer of the thoracic part of the oesophagus

№	Stage	TNM stage	Abs. number	Per cent, %	Mistake, m
1	I a	T1N0M0	4	1.09	0.54
2	I b	T2N0M0	39	10.65	1.61
3	II a	T3N0M0	218	59.56	2.57
4	II b	T1-2N1M0	9	2.46	0.81
5	III a	T4aN0M0, T3N1M0, T1-2N2M0	62	16.94	1.96
6	III b	T3N2M0	30	8.20	1.43
7	III c	T4aN1-2M0, T4bN1-3M0, T1-4N3M0	4	1.10	0.54