Table 1 Frequency and SAD of the largest node in each nodal group
Nodal groups | Frequency of patients with nodes | SADa (mm) | Number (percentage) of nodes with a SAD > current size criteria for a malignant nodeb |
|---|---|---|---|
Parotid | 215 (74.4%) | 4.4 ± 1.0 (2.2 – 7.3) | 0 (0%) |
Submandibular | 261 (90.3%) | 5.5 ± 1.4 (2.7 – 10.8) | 2 (0.8%) |
Occipital | 80 (27.7%) | 3.8 ± 1.0 (2.1 – 6.1) | 0 (0%) |
Facial | 0 (0%) | 0 (-) | 0 (0%) |
Retroauricular | 8 (2.8%) | 3.8 ± 0.7 (3.3 – 4.8) | 0 (0%) |
Retropharyngeal | 142 (49.1%) | 3.9 ± 1.2 (2.1 – 9.0) | 22 (15.5%) |
Upper internal jugular | |||
Jugulodigastric | 284 (98.2%) | 7.4 ± 1.9 (2.8 – 12.6) | 15 (5.3%) |
Level IIa | 236 (81.6%) | 4.9 ± 1.6 (2.3 – 11.9) | 3 (1.3%) |
Level IIb | 229 (79.2%) | 4.3 ± 1.2 (2.1– 7.6) | 0 (0%) |