Table 2. MRI features of the analyzed liver metastases.
| Variables | rHGP (n=12) | Non-rHGP (n=41) | P value |
|---|---|---|---|
| D (cm) | 3.62±2.85 | 2.79±1.91 | 0.363 |
| Da (cm) | 3.93±2.91 | 2.80±1.90 | 0.227 |
| ΔD (cm) | 0.31±0.43 | 0.00±0.19 | 0.001 |
| Number of CRLM, n (%) | 0.740 | ||
| Single | 4 (33.33) | 18 (43.90) | |
| Multiple (≥2) | 8 (66.67) | 23 (56.10) | |
| Tumor margin after enhancement, n (%) | >0.999 | ||
| Sharp | 3 (25.00) | 11 (26.83) | |
| Unclear | 9 (75.00) | 30 (73.17) | |
| Rim enhancement, n (%) | <0.001 | ||
| Yes | 12 (100.00) | 19 (46.34) | |
| No | 0 (0.00) | 22 (53.66) | |
| Perilesional parenchymal enhancement, n (%) | 0.058 | ||
| Yes | 9 (75.00) | 18 (43.90) | |
| No | 3 (25.00) | 23 (56.10) |
Non-rHGP: including the desmoplastic histopathological growth pattern and the pushing histopathological growth pattern; D: the longest tumor diameter on precontrast T1WI; Da: the longest tumor diameter on arterial phase images; ΔD: the tumor diameter difference between the precontrast and arterial phase images. MRI, magnetic resonance imaging; rHGP, replacement histopathological growth pattern; CRLM, colorectal liver metastasis; T1WI, T1-weighted images.