Table 1 Patient characteristics distribution of the metastatic and non-metastatic PTMC
Patient characteristics | Metastatic (n = 8) | Non-metastatic (n = 28) | P-value |
|---|---|---|---|
Gender | Â | Â | Â |
 Female | 4 (50%) | 23 (82.1%) | 0.086 |
 Male | 4 (50%) | 5 (17.9%) | |
Histological subtype | Â | Â | Â |
 Classical | 5 (62.5%) | 11 (39.3%) | 0.742 |
 Follicular | 3 (37.5%) | 14 (50%) | |
 Oncocytic | 0 (0) | 2 (7.1%) | |
 Diffuse sclerosing | 0 (0) | 1 (3.6%) | |
Multifocal | 6 (75%) | 16 (57.1%) | 0.441 |
Lymph node metastasis at diagnosis | 8 (100%) | 0 | <0.001 |
Extrathyroidal extension | 2 (25%) | 3 (10.7%) | 0.305 |
Angioinvasion | 3 (37.5%) | 2 (7.1%) | 0.061 |
TNM stage | Â | Â | Â |
 I&II | 4 (50%) | 26 (92.9%) | 0.03 |
 III&IV | 4 (50%) | 2 (7.1%) | |
I-131 No. | Â | Â | Â |
 0 | 1 (12.5%) | 24 (85.7%) | <0.001 |
 ≥ 1 | 7 (87.5%) | 4 (14.3%) |