Table 1. Patient Characteristics (n=36).
| Variable | Level | N = 36 (%) |
|---|---|---|
| Gender | Female | 20 (55.6) |
| Male | 16 (44.4) | |
| Age | Mean (SD) | 66 (12.71) |
| Alcohol | No | 27(75.0) |
| Yes | 9 (25.0) | |
| Smoking | No | 15 (41.7) |
| Yes | 21 (58.3) | |
| Grade | Moderate | 24 (66.7) |
| Poor | 5 (13.9) | |
| Well | 7 (19.4) | |
| PNI | No | 15 (41.7) |
| Yes | 21 (58.3) | |
| LVI | No | 24 (68.6) |
| Yes | 11 (31.4) | |
| Missing | 1 | |
| ECS | No | 9 (60) |
| Yes | 6 (40) | |
| Missing | 21 | |
| Pathology T Stage | T1/T2 | 16 (44.4) |
| T3/T4 | 20 (55.6) | |
| Pathology N Stage | N0 | 20 (57.1) |
| N1/N2 | 15 (42.9) | |
| Missing | 1 | |
| Post-surgical Treatment | None | 8 (22.2) |
| CRT | 10 (27.8) | |
| CRT (incomplete) | 2 (5.6) | |
| XRT | 12 (33.3) | |
| XRT(incomplete) | 2 (5.6) | |
| Refused | 2 (5.6) | |
| PET/CT ring/heterogeneous pattern | No | 19 (52.8) |
| Yes | 17 (47.2) | |
| CECT ring/heterogeneous pattern | No | 12 (40) |
| Yes | 18 (60) | |
| Missing | 6 | |
| Neck dissection procedure | L MRND | 4 (11.1) |
| R MRND | 4 (11.1) | |
| B MRND | 3 (8.3) | |
| L SND | 11 (30.6) | |
| R SND | 6 (16.7) | |
| B SND | 6 (16.7) | |
| None | 2 (5.6) | |
| Tumor SUV max | Median (Range) | 13.49 (3.4-29.3) |
| Tumor SUV mean | Median (Range) | 6.65 (2.2-15.6) |
| Tumor SUV peak | Median (Range) | 9.3 (2.1-19) |
| Tumor MTV | Median (Range) | 8.7 (1-94) |
| Tumor TLG | Median (Range) | 74.85 (2.1-1014) |
| Tumor N SAM | Median (Range) | 34.35 (1.2-554) |
| Tumor SAM | Median (Range) | 71 (1.5-927) |
| Nodal SUV max | Median (Range) | 0 (0-14.63) |
| Nodal SUV mean | Median (Range) | 0 (0-7.2) |
| Nodal SUV peak | Median (Range) | 0 (0-11.7) |
| Nodal MTV | Median (Range) | 0 (0-6.9) |
| Nodal TLG | Median (Range) | 0 (0-49.5) |
| Nodal N SAM | Median (Range) | 0 (0-53) |
| Nodal SAM | Median (Range) | 0 (0-58) |
SD, standard deviation; PNI, perineural invasion; LVI, lymphovascular invasion; ECS, extracapsular spread; SUV, standardized uptake values; MTV, metabolic tumor volume; TLG, total lesion glycolysis; N SAM, normalized standardized added metabolic activity; SAM, standardized added metabolic activity; MRND: modified radical neck dissection (L for left, R for right and B for bilateral); SND (selective neck dissection (L for left, R for right and B for bilateral)