Table 1.
Patient characteristics
| Variable | N |
|---|---|
| No. Patients | 50 (100%) |
| Sex | |
| Male | 37 (74%) |
| Female | 13 (26%) |
| Age (median, range) | 66 (45–88) years |
| T-site | |
| FOM | 43 (86%) |
| Inferior tongue | 6 (12%) |
| Lower gum | 0 (0%) |
| Buccal mucosa | 1 (2%) |
| pT stage (AJCC8) | |
| T1 | 31 (62%) |
| T2 | 17 (34%) |
| T3 | 2 (4%) |
| Depth of invasion (mean, range) | 3.3 (0.5–11) mm |
| Midline involvement | |
| Yes | 23 (46%) |
| No | 27 (54%) |
| Drainage pattern | |
| Ipsilateral | 30 (60%) |
| Bilateral | 20 (40%) |
| Contralateral | 0 (0%) |
| Timing of tracer injection | |
| Same day | 46 (92%) |
| Day before | 4 (8%) |
| Tracer dose (mean, range) | |
| Same day | 55.6 (51.0–63.6) MBq |
| Day before | 111.8 (109.5–114.0) MBq |
| SNB status | |
| SN + | 6 (12%) |
| SN– | 44 (88%) |