Table 1.
Associations between clinicopathological characteristics and contralateral occult carcinoma in PTC patients.
| Variables | Overall (N=204) | Contralateral occult | Non-contralateral occult lesion | P value | OR | 95% CI | P value |
|---|---|---|---|---|---|---|---|
| N = 27 (13.2%) | N = 177 (86.8%) | ||||||
| Sex | |||||||
| Male | 47 (23.0) | 5 (10.6) | 42 (89.4) | 0.549 | |||
| Female | 157 (77.0) | 22 (14.0) | 135 (86.0) | ||||
| Age (Y) | 42.51 ± 10.42 | 42.85 ± 9.12 | 42.46 ± 10.63 | ||||
| <55 | 172 (84.3) | 23 (13.4) | 149 (86.6) | 0.894 | |||
| ≥55 | 32 (15.7) | 4 (12.5) | 28 (87.5) | ||||
| Tumor size (cm) | 1.28 ± 0.77 | 2.00 ± 1.29 | 1.14 ± 0.60 | ||||
| ≤1 | 94 (46.1) | 6 (6.4) | 88 (93.6) | 0.008 | 1 | ||
| >1 | 110 (53.9) | 21 (19.1) | 89 (80.9) | 3.461 | 1.333–8.984 | 0.011 | |
| ETE | |||||||
| Absence | 183 (89.7) | 16 (8.7) | 167 (91.3) | <0.001 | 1 | ||
| Presence | 21 (10.3) | 11 (52.4) | 10 (47.6) | 11.481 | 4.231–31.154 | <0.001 | |
| LNM | |||||||
| Without LNM | 99 (48.5) | 5 (5.1) | 94 (94.9) | 0.004 | 1 | ||
| CLNM | 65 (31.9) | 14 (21.5) | 51 (78.5) | 2.086 | 1.246–3.495 | 0.005 | |
| LLNM | 40 (19.6) | 8 (20.0) | 32 (80.0) | 6.765 | 1.877–24.380 | 0.003 |
PTC, papillary thyroid carcinoma; Y, year; ETE, extrathyroidal extension; LNM, lymph node metastasis; CLNM, central lymph node metastasis; LLNM, lateral lymph node metastasis; OR, odds ratio; 95% CI, 95% confidence interval.