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Demographics and characteristics of patients.
| Without ETE (n = 203) |
With ETE (n = 174) |
All patients (n = 377) |
|
|---|---|---|---|
| Mean age | 50.5 (±10.9) | 47.6 (±10.2) | 49.1 (±10.6) |
| Sex (M : F) | 1 : 2.2 | 1 : 6.2 | 1 : 3.5 |
| Mean size of nodule (cm)* | 0.68 (±0.23) | 1.19 (±0.36) | 0.92 (±0.33) |
| Multicentricity | 94 (43.6%) | 99 (56.9%) | 193 (51.2%) |
| Lymph node metastasis | 9 (5.2%) | 144 (83.7%) | 153 (40.6%) |
* P < 0.001 (Fisher's exact test).
