Table 2. Characteristics of the patient with recurrence.
| Sex | Female |
| Age (years) | 58 |
| Tumor size (cm) | 3.5 |
| Extrathyroid invasion | Yes |
| Lymph node metastases | No |
| Multicentricity of the tumor | No |
| TNM classification | pT3, cN0pNx, M0 |
| Postoperative stimulated Tg | 1.6 ng/mL (Tg/rhTSH) |
| Interval between surgery and recurrence (months) | 36 |
| Site of recurrence | Cervical lymph nodes |
| Positive imaging method | Ultrasonography |
Tg: thyroglobulin; rhTSH: recombinant human TSH.