Table 1 Patient features in the ETE and non-ETE groups
|  | ETE group (n = 27) | Non-ETE group (n = 105) | P | ||
|---|---|---|---|---|---|
|  | Total | Minimal ETE (n = 15) | Gross ETE (n = 12) |  |  |
Age (years) | 44.89 ± 13.82 | 40.13 ± 14.08 | 50.83 ± 11.38 | 45.55 ± 14.17 | 0.828 |
Diameter (mm) | 13.59 ± 6.66 | 12.24 ± 4.93 | 15.29 ± 8.26 | 9.93 ± 4.64 | 0.001 |
Sex | Â | Â | Â | Â | Â |
 Female | 18 (66.7%) | 9 (33.3%) | 9 (33.3%) | 83 (79.0%) | 0.363 |
 Male | 9 (33.3%) | 6 (22.2%) | 3 (11.1%) | 22 (21.0%) |  |
Preoperative ultrasound | Â | Â | Â | Â | Â |
 Subcapsular location of the tumor | 15 (55.6%) |  |  | 102 (97.1%) | 0.000 |
 Extrathyroidal extension | 12 (44.4%) | 3 (11.1%) | 9 (33.3%) | 3 (2.9%) |  |
LN metastasis | 13 (48.1%) | 5 (18.5%) | 8 (29.6%) | 27 (25.7%) | 0.024 |
Histological subtype | 6 (22.2%) | 2 (7.4%) | 4 (14.8%) | 10 (9.5%) | 0.071 |