Table 3.
Ultrasound findings in 424 patients with focal nodular hyperplasia and 36 patients with hepatocellular adenoma
| Focal nodular hyperplasia | Hepatocellular adenoma | |
| (n = 424) | (n = 36) | |
| Size of lesion, mm (range) | 49 ± 24 (12-110) | 34 ± 22 (20-120) |
| Conventional B-mode ultrasound | ||
| Echo texture | ||
| Hypoechoic | 361 | 81 |
| Isoechoic | 382 | 20 |
| Hyperechoic | 6 | 8 |
| Central scar | 241 | 0 |
| Colour/power Doppler imaging | ||
| Hypervasular | 369 | 33 |
| Radial vascular architecture | 234 | 3 |
| Contrast-enhanced ultrasound | ||
| Arterial phase enhancement | 424 | 36 |
| (Early) Portal venous phase enhancement | 406 | 6 |
1
Depending on the technique and ultrasound machine used; all in a sonographically bright liver. Reproduced with permission from Dietrich et al[66].