Table 4 Contralateral involvement depending on whether the primary tumor extends over the mid-sagittal plane, the T-category, and how many ipsilateral LNLs were involved.
From: A probabilistic model of bilateral lymphatic spread in head and neck cancer
T-cat. | ipsi | Mid. ext. | I | II | III | IV | Total | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | n | % | n | |||
Early | 0 | False | 0 | 0.0 | 1 | 1.2 | 0 | 0.0 | 0 | 0.0 | 86 |
Early | 0 | True | 0 | 0.0 | 1 | 10.0 | 1 | 10.0 | 0 | 0.0 | 10 |
Early | 0 | Unknown | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 12 |
Early | 1 | False | 1 | 0.5 | 11 | 5.8 | 2 | 1.1 | 1 | 0.5 | 189 |
Early | 1 | True | 1 | 11.1 | 2 | 22.2 | 0 | 0.0 | 0 | 0.0 | 9 |
Early | 1 | Unknown | 0 | 0.0 | 3 | 9.7 | 0 | 0.0 | 1 | 3.2 | 31 |
Early | \(\ge\) 2 | False | 1 | 1.0 | 15 | 14.4 | 3 | 2.9 | 3 | 2.9 | 104 |
Early | \(\ge\) 2 | True | 0 | 0.0 | 3 | 30.0 | 4 | 40.0 | 1 | 10.0 | 10 |
Early | \(\ge\) 2 | Unknown | 0 | 0.0 | 3 | 13.6 | 0 | 0.0 | 0 | 0.0 | 22 |
Advanced | 0 | False | 0 | 0.0 | 2 | 5.9 | 0 | 0.0 | 0 | 0.0 | 34 |
Advanced | 0 | True | 0 | 0.0 | 3 | 12.5 | 0 | 0.0 | 0 | 0.0 | 24 |
Advanced | 0 | Unknown | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 3 |
Advanced | 1 | False | 0 | 0.0 | 3 | 4.6 | 0 | 0.0 | 0 | 0.0 | 66 |
Advanced | 1 | True | 1 | 1.6 | 18 | 29.5 | 5 | 8.2 | 1 | 1.6 | 61 |
Advanced | 1 | Unknown | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 9 |
Advanced | \(\ge\) 2 | False | 4 | 5.3 | 16 | 21.1 | 7 | 9.2 | 4 | 5.3 | 76 |
Advanced | \(\ge\) 2 | True | 3 | 3.8 | 46 | 58.2 | 18 | 22.8 | 8 | 10.1 | 79 |
Advanced | \(\ge\) 2 | Unknown | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 8 |
