Table 1 Clinicopathologic features of patients with pathologically multifocal or unifocal PTC
| Â | Multifocal (n = 61) | Unifocal (n = 266) | Odds ratio (95% CI) | p-value |
|---|---|---|---|---|
Sex | ||||
 Female | 49 (80.3%) | 189 (71.1%) |  |  |
 Male | 12 (19.7%) | 77 (29.0%) | 0.60 (0.30–1.19) | 0.14 |
Age | ||||
 < 55 years | 40 (65.6%) | 160 (60.2%) |  |  |
 ≥ 55 years | 21 (34.4%) | 106 (39.9%) | 0.79 (0.44–1.42) | 0.43 |
Clinical tumor size | ||||
 ≤ 20 mm | 52 (85.3%) | 204 (76.6%) |  |  |
 > 20 mm | 9 (14.8%) | 62 (23.4%) | 0.57 (0.26–1.21) | 0.14 |
Clinical lymph node metastasis | Â | Â | Â | Â |
 Negative | 46 (75.4%) | 246 (92.5%) |  |  |
 Positive | 15 (24.6%) | 20 (7.5%) | 4.01 (1.91–8.04) | < 0.001 |
Pathological tumor size | ||||
 ≤ 20 mm | 55 (90.2%) | 219 (82.3%) |  |  |
 > 20 mm | 6 (9.8%) | 47 (17.7%) | 0.51 (0.21–1.25) | 0.13 |
Pathological lymph node metastasis | ||||
 Negative | 26 (42.6%) | 129 (48.5%) |  |  |
 Positive | 35 (57.4%) | 137 (51.5%) | 1.27 (0.72–2.22) | 0.41 |
Number of pathological lymph node metastasis | ||||
 ≤ 5 | 50 (82.0%) | 251 (94.4%) |  |  |
 > 5 | 11 (18.0%) | 15 (5.6%) | 3.68 (1.60–8.49) | 0.001 |