Patient and Disease Characteristics According to 18F-FDG PET/CT Results
| PET/CT | ||
|---|---|---|
| Characteristic | Negative (n = 52) | Positive (n = 39) |
| Mean age ± SD (y) | 58.2 ± 10.2 | 57.2 ± 9.1 |
| Sex (n) | ||
| Male | 45 | 33 |
| Female | 7 | 6 |
| Original tumor site (n) | ||
| Oral cavity | 11 | 14 |
| Oropharynx | 15 | 11 |
| Hypopharynx | 7 | 5 |
| Larynx | 18 | 9 |
| Nasopharynx | 1 | 0 |
| Initial stage (n) | ||
| I | 4 | 1 |
| II | 11 | 7 |
| III | 9 | 10 |
| IV | 28 | 21 |
| Primary treatment | ||
| Surgery alone | 7 | 6 |
| Surgery and radiotherapy | 28 | 15 |
| Radiotherapy alone | 4 | 0 |
| Concurrent chemotherapy | 10 | 14 |
| Induction chemotherapy followed by radiotherapy or surgery | 3 | 4 |
| Mean duration (±SD) after therapy (mo) | 12.3 ± 4.1 | 10.7 ± 4.7 |