Table 3 Comparisons of Off-Tg with TgAb-negative and RAI administration
Off-Tg ≥ 1 ng/ml (N = 33) | Off-Tg < 1 ng/ml (N = 10) | t/χ2 | P | |
|---|---|---|---|---|
Age, yrs | 46.2 ± 14.3 | 38.4 ± 16.0 | − 1.478 | 0.147 |
Sex (male) | 13 | 3 | 0.027 | 0.869 |
BMI | 23.4 ± 3.5 | 22.5 ± 3.3 | − 0.776 | 0.442 |
NG | 16 | 3 | 0.446 | 0.504 |
HD | 4 | 1 | < 0.001 | 1.000 |
Hypertension | 3 | 1 | – | 1.000 |
Diabetes | 1 | 1 | – | 0.415 |
Hyperthyroidism | 0 | 2 | – | 1.000 |
Tumor size (primary), mm | 22.7 ± 14.0 | 18.7 ± 11.0 | − 0.829 | 0.412 |
Multifocality (primary) | 3 | 4 | 3.351 | 0.067 |
Bilatrality (primary) | 3 | 1 | – | 1.000 |
Surgical strategy | ||||
iCND | 0 | 0 | – | – |
bCND | 7 | 2 | – | – |
bCND + iLND | 19 | 7 | – | 0.645 |
bCND + bLND | 7 | 1 | – | 0.645 |
Harvested LNs | 37.6 ± 20.8 | 38.2 ± 21.8 | 0.074 | 0.941 |
Metastatic LNs | 10.3 ± 9.2 | 6.8 ± 8.2 | − 1.079 | 0.287 |
The ratio of metastatic LNs % | 29.8 ± 23.6 | 16.3 ± 10.7 | − 1.744 | 0.089 |
Diameter of recurrent LNs | 23.0 ± 15.0 | 15.6 ± 4.7 | − 2.472 | 0.018* |
≥ 25 mm | 13 | 0 | 3.933 | 0.047* |
Extranodal extension | 11 | 6 | 1.304 | 0.254 |