Table 3.
Comparison of B-mode US and CEUS findings in RCN and RVT.
| B-mode US signs | RCN (n = 12) | RVT (n = 5) | p (chi2) | p (two-sided Fisher’s exact test) |
|---|---|---|---|---|
| Reduced Echogenicity | 6/12 (50.0%) | 0/5 (0%) | 0.049 | 0.102 |
| Loss of corticomedullary differentiation | 6/12 (50.0%) | 2/5 (40.0%) | 0.707 | 1.000 |
| Hypoechoic rim | 4/12 (33.3%) | 0/5 (0%) | 0.140 | 0.261 |
| Resistance index > 1 or not measurable due to hypoperfusion | 1/11a (9.1%) | 5/5 (100%) | < 0.001 | 0.001 |
| CEUS signs | ||||
| Delayed cortical enhancement | 6/12 (50%) | 4/5 (80.0%) | 0.252 | 0.338 |
| Total loss of cortical perfusion | 0/12 (0%) | 2/5 (40.0%) | 0.020 | 0.074 |
| Enhancement of renal medulla | 12/12 (100%) | 0/5 (0%) | < 0.001 | < 0.001 |
A p-value < 0.05 indicating statistical significance is marked bold.
Continuous variables are given as median (IQR), categorical variables as absolute/total numbers (n/N) and percentages in brackets.
RCN denotes renal cortical necrosis, RVT renal vein thrombosis, US denotes ultrasound, CEUS denotes contrast-enhanced ultrasound.
aMissing image data in one patient.