Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The incidence of lymph nodes metastasis at each level among 244 patients.
| Level | Unilateral (%) | Bilateral (%) | Total (%) |
|---|---|---|---|
| I | 0 | 0 | 0 |
| II | 120 (49.2) | 24 (9.8) | 144 (59.0) |
| III | 121 (49.6) | 8 (3.3) | 129 (52.9) |
| IV | 35 (14.3) | 0 | 35 (14.3) |
| V | 4 (1.6) | 0 | 4 (1.6) |
| VI | 7 (2.9) | 0 | 7 (2.9) |
| RPLN* | 25 (10.2) | 15 (6.1) | 40 (16.4) |
| Total (%) | 136 (55.7) | 40 (16.4) | 176 (72.1) |
*Retropharyngeal Lymph node.
