Table 2.
Anatomical features of Xp11.2 translocation and conventional renal cell carcinoma at clinical T1 stage
| Anatomic features | Clinical T1a stage | Clinical T1b stage | ||||
|---|---|---|---|---|---|---|
| Xp11.2 translocation RCC (36 cases) | Conventional RCC (145 cases) | P-value | Xp11.2 translocation RCC (34 cases) | Conventional RCC (128 cases) | P-value | |
| Radius, cm (diameter, mean ± SD) | 3.27 ± 0.60 | 3.08 ± 0.79 | 0.304 | 5.58 ± 0.74 | 5.56 ± 0.86 | 0.919 |
| Exophytic/endophytic properties | 0.117 | 0.003 | ||||
| ≥ 50% | 15 (41.7%) | 76 (52.4%) | 12 (35.3%) | 70 (54.7%) | ||
| < 50% | 6 (16.7%) | 30 (20.7%) | 8 (23.5%) | 39 (30.5%) | ||
| Entirely endophytic | 15 (41.7%) | 39 (26.9%) | 14 (41.2%) | 19 (14.8%) | ||
| Nearness of tumor to collecting system or sinus (mm) | 0.009 | < 0.001 | ||||
| > 7 | 5 (13.9%) | 43 (29.7%) | 2 (5.9%) | 28 (21.9%) | ||
| > 4 but < 7 | 9 (25.0%) | 48 (33.1%) | 3 (8.8%) | 45 (35.2%) | ||
| < 4 | 22 (61.1%) | 54 (37.2%) | 29 (85.3%) | 55 (43.0%) | ||
| Anterior or posterior or X | 0.309 | 0.083 | ||||
| Anterior | 18 (50.0%) | 60 (41.4%) | 17 (50.0%) | 50 (39.1%) | ||
| Posterior | 15 (41.7%) | 67 (46.2%) | 13 (38.2%) | 43 (33.6%) | ||
| X | 3 (8.3%) | 18 (12.4%) | 4 (11.8%) | 35 (27.3%) | ||
| Location relative to the polar lines | 0.001 | 0.293 | ||||
| Entirely above upper or below lower polar line | 8 (22.2%) | 56 (38.6%) | 4 (11.8%) | 36 (28.1%) | ||
| Lesion crosses polar line | 4 (11.1%) | 45 (31.0%) | 12 (35.3%) | 25 (19.5%) | ||
| > 50% mass across polar line or mass crosses axial renal midline or is entirely between polar lines | 24 (66.7%) | 44 (30.3%) | 18 (52.9%) | 67 (52.3%) | ||
| Total RNEAL score (mean ± SD) | 7.92 ± 2.03 | 6.05 ± 1.73 | 0.003 | 9.26 ± 2.03 | 7.15 ± 1.73 | 0.012 |