Table 2. Comparison of computed tomography findings between renal oncocytoma and chromophobe RCC.
| Characteristic | Oncocytoma (n=51) | Chromophobe RCC (n=120) | p-value |
|---|---|---|---|
| Ball- or bean-type | 0.084 | ||
| Ball-type | 48 (94.1) | 100 (83.3) | |
| Bean-type | 3 (5.9) | 20 (16.7) | |
| Central stellate scar | <0.001 | ||
| Absent | 31 (60.8) | 108 (90) | |
| Present | 20 (39.2) | 12 (10) | |
| Angular interface | 0.193 | ||
| Round | 37 (72.5) | 70 (58.3) | |
| Intermediate | 3 (5.9) | 14 (11.7) | |
| Angular | 11 (21.6) | 36 (30) | |
| Segmental inversion enhancement | 0.002 | ||
| Absent | 28 (54.9) | 94 (78.3) | |
| Present | 23 (45.1) | 26 (21.7) | |
| Enhancement pattern | 0.180 | ||
| Early washout | 26 (51) | 49 (40.8) | |
| Gradual enhancement | 21 (41.2) | 49 (40.8) | |
| Prolonged | 4 (7.8) | 22 (18.3) |
Values are presented as number (%).
RCC, renal cell carcinoma.