Table 1.
Associations between preoperative parameters and extrathyroidal extension in patients with PTC
| Variable | Extrathyroidal extension |
p value | ||
|---|---|---|---|---|
| none (n = 594) | minimal (n = 233) | advanced (n = 60) | ||
| Age | 45 (36–54) | 48 (39–57) | 55 (45–62) | <0.001 |
| Female sex | 497 (84) | 184 (79) | 47 (78) | 0.094 |
| BMI | 23.2 (21.1–25.6) | 23.8 (21.9–27.8) | 25.4 (22.7–28.4) | <0.001 |
| Category | <0.001 | |||
| Underweight | 25 (4) | 8 (3) | 1 (2) | |
| Normal | 325 (55) | 112 (48) | 18 (30) | |
| Overweight | 144 (24) | 47 (20) | 19 (32) | |
| Obese | 100 (17) | 66 (28) | 22 (37) | |
| Tumor size | 1.2 (0.7–2.0) | 1.9 (1.3–2.5) | 2.9 (2.2–3.5) | <0.001 |
| Hashimoto's thyroiditis | 91 (15) | 45 (19) | 4 (7) | 0.683 |
| BRAF mutationa | 196 (67) | 130 (81) | 38 (93) | <0.001 |
Values are presented as medians (IQR) or numbers (%). The total number is patients is 887.
a
Status was available for 493 patients.