Table 1 Clinical N category classification of patients in this study based on the Union for International Cancer Control TNM staging system
UICC edition | n | N category (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
N0 | N1 | N2a | N2b | N2c | N3 | N3a | N3b | ||
7th | 77 | 32 (42) | 8 (10) | 1 (1) | 23 (30) | 12 (16) | 1 (1) | NA | NA |
8th | 78 | 22 (28) | 4 (5) | 0 (0) | 29 (37) | 9 (12) | NA | 0 (0) | 14 (18) |