Article Figures & Data
Figures
- Figure 1
- Locoregional recurrence-free survival curves in patients with locoregionally recurrent papillary thyroid carcinoma in the radiation therapy (RT) group (blue) and non-RT group (green) (p<0.001).
- Figure 2
- Distant metastasis-free survival curves in patients with locoregionally recurrent papillary thyroid carcinoma in the radiation therapy (RT) group (blue) and non-RT group (green) (p=0.906).
- Figure 3
- Overall survival curves in patients with locoregionally recurrent papillary thyroid carcinoma in the radiation therapy (RT) group (blue) and non-RT group (green) (p=0.921).
Tables
- Table 1
- Comparison of patients and tumor characteristics between the RT and non-RT groups (N=57).
Characteristic All patients RT (n=24) Non-RT (n=33) P-value Age (years) <55 33 (57.9) 14 (58.3) 20 (60.6) 0.863* ≥55 24 (42.1) 10 (41.7) 13 (39.4) Gender Male 12 (21.1) 4 (16.7) 8 (24.2) 0.489* Female 45 (78.9) 20 (83.3) 25 (75.8) Subtype Classic 54 (94.7) 23 (95.8) 31 (93.9) 1.000† Follicular 3 (5.3) 1 (4.2) 2 (6.1) rT classification 0 52 (91.2) 20 (83.3) 32 (97.0) 0.151† 4a 5 (8.8) 4 (16.7) 1 (3.0) rN classification 0 4 (7.0) 4 (16.7) 0 (0.0) 0.027† 1b 53 (93.0) 20 (83.3) 33 (100.0) Resection margin Negative 53 (93.0) 21 (87.5) 32 (97.0) 0.300† Positive 4 (7.0) 3 (12.5) 1 (3.0) - Table 2
- Univariate analysis of the 15-year locoregional recurrence-free survival in all patients (N=57).
Characteristics n (%) 15-year LRRFS P-value* Age (years) <55 34 (59.6) 48.0 0.597 ≥55 23 (40.4) 51.8 Gender Male 12 (21.1) 22.2 0.008 Female 45 (78.9) 57.4 Variant Classic 54 (94.7) 50.2 0.442 Follicular 3 (5.3) 33.3 Resection margin Negative 53 (93.0) 47.9 0.636 Positive 4 (7.0) 75.0 Patient group RT 24 (42.1) 80.5 <0.001 Non-RT 33 (57.9) 28.1 Values are presented as numbers and percentages (%).
LRRFS: locoregional recurrence-free survival, RT: radiation therapy,
↵* Log-rank test
- Table 3
- Multivariate cox proportional hazard model of variables contributing to locoregional recurrence-free survival rate.
Variables Hazard ratio 95% CI P-value Gender Male 3.523 1.531-8.110 0.003 Female 1 Patient group Non-RT 8.292 2.722-25.254 <0.001 RT 1 CI: confidence interval, RT: radiation therapy
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