Table 2:
Imaging features of renal cancers at index unenhanced CT
| Detected (n=27) |
Missed (n=16) |
Total (n=43) |
Proportion Detected |
p-valuea | |
|---|---|---|---|---|---|
| Size | 0.0036 | ||||
| <= 3.0 cm | 7 | 12 | 19 | 37% | |
| >3.0 cm | 20 | 4 | 24 | 83% | |
| Heterogeneity | 0.3475 | ||||
| Heterogeneousb | 15 | 6 | 21 | 71% | |
| Homogeneous | 12 | 10 | 22 | 55% | |
| ≥70 HU | 0 | 0 | 0 | ||
| >20 but <70 HU | 12 | 10 | 22 | ||
| ≤20 HU | 0 | 0 | 0 | ||
| Calcification | 0.2824 | ||||
| Present | 3 | 0 | 3 | 100% | |
| Absent | 24 | 16 | 40 | 60% | |
| Contour Deformity | 0.4433 | ||||
| Yes | 23 | 12 | 35 | 66% | |
| Exophytic | 16 | 9 | 25 | 64% | |
| Endophyticc | 3 | 3 | 6 | 50% | |
| Whole/Majority of Kidney Involved | 4 | 0 | 4 | 100% | |
| No | 4 | 4 | 8 | 50% |
a
Values in bold are statistically significant
b
Heterogeneous includes masses with septations or wall thickening
c
Endophytic: projecting into the renal sinus and displacing the renal sinus fat