Table 2. The association for RUM-LNM with clinicopathological characteristics.
| Clinical pathologic factor | Cases | RUM-LNM (%) | P value |
|---|---|---|---|
| Age | 0.531 | ||
| ≤60 | 89 | 16 (18.0) | |
| >60 | 97 | 21 (21.6) | |
| Gender | 0.037 | ||
| Male | 146 | 34 (23.3) | |
| Female | 40 | 3 (7.5) | |
| Tumor location | 0.296 | ||
| Middle | 161 | 34 (21.1) | |
| Lower | 25 | 3 (12.0) | |
| Tumor grade | 0.018 | ||
| G1 | 14 | 0 (0.0) | |
| G2 | 79 | 13 (16.5) | |
| G3 | 93 | 24 (25.8) | |
| T stage | 0.004 | ||
| Tis + T1a + T1b | 29 | 1 (3.4) | |
| T2 | 25 | 5 (20.0) | |
| T3 | 104 | 20 (19.2) | |
| T4a + T4b | 28 | 11 (39.3) | |
| Pathological stage | <0.001 | ||
| 0 + IA + IB | 21 | 0 (0.0) | |
| IIA + IIB | 77 | 2 (2.6) | |
| IIIA + IIIB + IIIC | 88 | 35 (39.8) |
RUM, right upper mediastina; LNM, lymph node metastasis.