Table 1. Demographic and clinicopathological characteristics of 435 patients with DTC.
| Variables | No. of patients (%) |
|---|---|
| Gender | |
| Male | 111 (25.5) |
| Female | 324 (74.5) |
| Age, mean (SD), years | 42.94 (13.44) |
| Pathology | |
| Papillary | 406 (93.3) |
| Follicular | 29 (6.7) |
| Tumor size, mean (SD), cm | 1.89 (1.33) |
| Tumor location | |
| Upper pole | 145 (33.4) |
| Middle | 158 (36.3) |
| Lower pole | 132 (30.3) |
| Multifocality | |
| Yes | 211 (48.5) |
| No | 224 (51.5) |
| Affected lobes | |
| Unilateral | 311 (71.5) |
| Bilateral | 124 (28.5) |
| Capsular invasion | |
| Yes | 201 (46.2) |
| No | 234 (53.8) |
| Central LNM | |
| Yes | 254 (58.4) |
| No | 181 (41.6) |
| Surgical extent | |
| A | 96 (22.1) |
| B | 150 (34.5) |
| C | 189 (43.4) |
| Hypocalcemia | |
| Normal | 226 (51.9) |
| Asymptomatic | 110 (25.3) |
| Symptomatic | 99 (22.8) |
| Parathyroid glands preserved | |
| D | 95 (21.8) |
| E | 161 (37.0) |
| F | 179 (41.1) |
A, TT + anterior laryngeal and trachea LND only; B, TT + unilateral tracheoesophageal groove LND; C, TT + bilateral tracheoesophageal groove LND; D, 1–2 parathyroid preservation in situ without parathyroid autotransplantation; E, 1–2 parathyroid preservation in situ + at least 1 parathyroid autotransplantation; F, 3–4 parathyroid preservation in situ + at least 1 parathyroid autotransplantation. LNM, lymph node metastasis; LND, lymph node dissection; TT, total thyroidectomy; DTC, differentiated thyroid cancer.