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Relationship Between Tumor Locations and LLNM in Solitary PTMC
| LLNM- | LLNM+ | χ2 | P value | Metastasis Rate (%) | |
|---|---|---|---|---|---|
| n=2549 (%) | n=150 (%) | ||||
| Tumor locations | 47.180 | <0.001 | |||
| Upper third | 548 (21.5) | 67 (44.7) | 67/615 (10.9) | ||
| Middle third | 1161 (45.5) | 58 (38.7) | 58/1219 (4.8) | ||
| Lower third | 705 (27.7) | 19 (12.7) | 19/724 (2.6) | ||
| Isthmus | 135 (5.3) | 6 (4.0) | 6/141 (4.3) |
Abbreviation: LLNM, lateral lymph node metastasis.
