Table 1.
Patient characteristics. All values are median (interquartile range) or frequency (%)
| No. LND (N = 190) | LND (N = 334) | p value | |
|---|---|---|---|
| Age | 62.9 (53.7, 70.4) | 59.2 (51.3, 67.4) | 0.005 |
| Gender | 0.5 | ||
| Female | 63 (33 %) | 102 (31 %) | |
| Male | 127 (67 %) | 232 (69 %) | |
| Race | 0.12 | ||
| White | 17 (8.9 %) | 45 (13 %) | |
| Other | 173 (91 %) | 289 (87 %) | |
| ASA | 0.8 | ||
| I/II | 116 (61 %) | 200 (60 %) | |
| III/IV | 74 (39 %) | 134 (40 %) | |
| Presenting symptoms | 0.6 | ||
| Incidental | 97 (51 %) | 157 (47 %) | |
| Local | 75 (40 %) | 146 (44 %) | |
| Systemic | 17 (9.0 %) | 31 (9.3 %) | |
| Pathological T stage | 0.001 | ||
| T2 | 84 (44 %) | 95 (28 %) | |
| T3 | 101 (53 %) | 227 (68 %) | |
| T4 | 5 (2.6 %) | 12 (3.6 %) | |
| Pathological N stage | |||
| pN0 | – | 308 (92 %) | |
| pN1 | – | 26 (7.8 %) | |
| Tumor size (cm) | 9.2 (8.0, 10.9) | 10.1 (8.5, 12.2) | <0.0001 |
| Histology | 0.10 | ||
| Clear cell | 134 (71 %) | 262 (78 %) | |
| Chromophobe | 35 (18 %) | 49 (15 %) | |
| Papillary | 21 (11 %) | 23 (6.9 %) | |
| Location | 0.12 | ||
| Right | 105 (55 %) | 161 (48 %) | |
| Left | 85 (45 %) | 173 (52 %) | |
| Lymphadenopathy | <0.0001 | ||
| No | 173 (91 %) | 223 (67 %) | |
| Yes | 17 (8.9 %) | 111 (33 %) | |
| Nodal template | |||
| Hilar | – | 40 (20 %) | |
| Other | – | 162 (80 %) | |
| Sarcomatoid | 8 (4.2 %) | 25 (7.5 %) | 0.14 |
| Procedure type | 0.9 | ||
| Open | 171 (90 %) | 301 (90 %) | |
| Laparoscopic | 19 (10 %) | 33 (9.9 %) | |
| Surgery type | <0.0001 | ||
| Radical | 166 (87 %) | 326 (98 %) | |
| Partial | 24 (13 %) | 8 (2.4 %) |