Table 1.
Initial patient and node characteristics
| Patient characteristic | Patients (N=36) |
|---|---|
| Median #Nodes | 2 (1–4) |
| Concurrent systemic therapy | 26 (72%) |
| Males | 32 (89%) |
| Current smokers | 6 (17%) |
| Past smokers | 18 (50%) |
| Median pack years smoking | 32 (5–65) |
| P16 IHC+/HPV ISH+ | 19 (53%) |
| P16 IHC+/HPV ISH− | 11 (31%) |
| P16 IHC unknown/HPV ISH+ | 6 (17%) |
| T-Stage | |
| TX | 2 (6%) |
| T1 | 10 (28%) |
| T2 | 15 (42%) |
| T3 | 7 (19%) |
| T4 | 2 (6%) |
| N-Stage | |
| N1 | 8 (22%) |
| N2a | 3 (8%) |
| N2b | 24 (67%) |
| N2c | 1 (3%) |
| Primary subsite | |
| Tonsil | 18 (50%) |
| Base of tongue | 18 (50%) |
| Initial node characteristic | Number lymph nodes (N=66) |
|---|---|
| HU median | 80 (34–124) |
| HU standard deviation | 26 (14–46) |
| Volume (mm3) | 2311 (60–29565) |
| Short-axis diameter (mm) | 13 (4–32) |
| % Node | |
| HU <0 (hypodense) | 1 (0–15) |
| HU 0–30 (fluid) | 5 (0–46) |
| HU 30–170 (soft tissue) | 93 (51–100) |
| HU >170 (enhancing/calcified) | 0 (0–2) |
| Node Site | |
| Level IB | 1 (2%) |
| Level IIA | 51 (77%) |
| Level IIB | 5 (8%) |
| Level III | 7 (8%) |
| Level IV | 2 (3%) |
Abbreviations: HU- Hounsfield units
For categorical variables the frequency (percent) is listed. For continuous variables, the median (range) is listed.