Table 4. Comparisons in patients with 3 identified parathyroid glands.
| Characteristics | In situ preservation (N=74) | Autotransplantation (N=138) | P |
|---|---|---|---|
| Age, years | 41.65±12.85 | 40.73±12.90 | 0.622 |
| Sex (male) | 19 | 40 | 0.608 |
| BMI | 22.48±3.30 | 23.30±3.63 | 0.109 |
| NG | 39 | 67 | 0.666 |
| HD | 22 | 48 | 0.540 |
| Hypertension | 8 | 16 | 0.864 |
| Diabetes | 1 | 5 | 0.606 |
| Hypothyroidism | 2 | 2 | 0.912 |
| Hyperthyroidism | 3 | 4 | 0.654 |
| Tumor size (mm) | 14.86±9.03 | 14.06±7.84 | 0.513 |
| Multifocality | 17 | 41 | 0.302 |
| Capsule invasion | 34 | 60 | 0.730 |
| TNM stage | |||
| Tx/t1/t2/t3/t4 | 0/36/3/34/1 | 1/65/8/59/5 | 0.889 |
| Nx/N0/n1a/n1b | 0/26/34/14 | 1/43/52/42 | 0.232 |
| Hypoparathyroidism | |||
| Transient | 29/74 (39.2%) | 87/138 (63.0%) | 0.001* |
| Permanent | 2/74 (2.7%) | 1/138 (0.7%) | 0.581 |
| PTH (pg/mL) | |||
| Preoperative | 42.03±10.17 | 44.55±9.72‡ | 0.079 |
| 1-day | 17.91±10.80 | 14.22±9.54 | 0.011* |
| 1-month | 31.59±12.15 | 29.07±11.07 | 0.162 |
| 3-month | 37.62±16.20 | 31.59±12.15 | 0.103 |
| 6-month | 34.02±14.67 | 33.66±12.24 | 0.917 |
| 12-month | 42.03±17.01 | 32.85±11.70‡ | 0.026* |
| 24-month | 29.79±18.09 | 34.29±11.07 | 0.457 |
| PTH <14 pg/mL | |||
| 1-day | 28 (37.8%) | 87 (63.5%) | <0.001* |
| 1-month | 3 (4.9%) | 9 (7.3%) | 0.762 |
| 3-month | 1 (5.6%) | 1 (2.0%) | 1.000 |
| 6-month | 1 (5.3%) | 0 (0%) | 0.637 |
| 12-month | 1 (5.9%) | 1 (2.8%) | 1.000 |
| 24-month | 1 (16.7%) | 0 (0%) | 0.496 |
| Ca (mg/dL) | |||
| Preoperative | 9.40±0.44 | 9.32±0.44 | 0.264 |
| 1-month | 9.36±0.48 | 9.16±0.52 | 0.004* |
| 3-month | 8.96±0.68 | 8.92±0.56 | 0.763 |
| 6-month | 8.92±0.68 | 9.04±0.72 | 0.258 |
| 12-month | 9.00±0.52 | 9.00±0.60 | 0.988 |
| 24-month | 9.16±0.84 | 8.96±0.48 | 0.313 |
| Ca 8.5 mg/dL | |||
| 1-month | 3 (4.5%) | 10 (8.0%) | 0.549 |
| 3-month | 8 (19.5%) | 15 (17.4%) | 0.777 |
| 6-month | 8 (21.1%) | 9 (11.3%) | 0.157 |
| 12-month | 3 (9.7%) | 9 (13.8%) | 0.805 |
| 24-month | 2 (11.1%) | 5 (14.3%) | 1.000 |
*, significantly statistical differences; ‡, the difference of PTH levels between preoperative and postoperative 12-month in patients with autotransplantation reached statistical significance. BMI, body mass index; HD, Hashimoto’s disease; NG, nodular goiter; TNM, tumor node metastasis; PTH, parathyroid hormone; Ca, calcium.