Table 1.
Clinicopathological Characteristics of 3686 PTMC Patients
| Characteristics | No. (%) |
|---|---|
| Gender | |
| Male | 886 (24.0) |
| Female | 2800 (76.0) |
| Age (Year) | |
| Median (IQR) | 45 (35–55) |
| <55 | 2758 (74.8) |
| ≥55 | 928 (25.2) |
| Pathological Subtype | |
| Classic | 3492 (94.7) |
| Follicular variant | 169 (4.6) |
| Other | 25 (0.7) |
| Tumor Size (mm) | |
| Median (IQR) | 6 (4–9) |
| ≤6.5 | 1982 (53.8) |
| >6.5 | 1704 (46.2) |
| CLT | |
| Absent | 2395 (65.0) |
| Present | 1291 (35.0) |
| Multifocality | |
| Absent | 2699 (73.2) |
| Present | 987 (26.8) |
| Bilaterality | |
| Absent | 3021 (82.0) |
| Present | 665 (18.0) |
| ETE | |
| Absent | 2779 (75.4) |
| Present | 907 (24.6) |
| LVI | |
| Absent | 3626 (98.4) |
| Present | 60 (1.6) |
| T Stage | |
| T1a | 3628 (98.4) |
| T3b | 30 (0.8) |
| T4a | 28 (0.8) |
| N Stage | |
| N0 | 2510 (68.1) |
| N1a | 920 (25.0) |
| N1b | 256 (6.9) |
| M Stage | |
| M0 | 3860 (99.8) |
| M1 | 6 (0.2) |
Abbreviations: IQR, interquartile range; CLT, chronic lymphocytic thyroiditis; ETE, extrathyroidal extension; LVI, lymphovascular invasion.