Research Article
Analysis of the Role of Selective Neck Dissection in Clinically Node-Positive T3/T4 Oral Cancers
Table 3
Pathological lymph node distribution by N stage.
| | pN stage | Ia
(%) | Ib
(%) | IIa
(%) | IIb
(%) | III
(%) | IV
(%) | V
(%) | Total
(%) |
| | N0 | 114 (85.1%) | 78 (58.2%) | 81 (60.4%) | 127 (94.8%) | 112 (83.6%) | 131 (97.8%) | 128 (95.5%) | 51 (38.1%) |
| | N+ | N1 | 2 (1.5%) | 9 (6.7%) | 11 (8.2%) | 1 (0.7%) | 0 (0%) | 0 (0%) | 0 (0%) | 25 (18.7%) | | N2 | 8 (6.0%) | 31 (23.0%) | 26 (19.4) | 3 (2.2%) | 8 (6.0%) | 2 (1.5%) | 2 (1.5%) | 39 (29.0%) | | N3 | 10 (7.5%) | 16 (11.9%) | 16 (11.9%) | 3 (2.2%) | 14 (10.4%) | 1 (0.7%) | 4 (3%) | 19 (14.2%) | | N+ | 20 (15%) | 56 (41.8%) | 53 (39.6%) | 7 (5.2%) | 22 (16.4%) | 3 (2.2%) | 6 (4.5%) | 83 (61.9%) |
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