Table 2 The CT and MRI characteristics of MA
From: The findings of CT and MRI in patients with metanephric adenoma
Number | Calcification | Cystic changes or necrosis | Homogeneous/heterogeneous | plain CT (HU) | Enhanced CT | CTA | MRI | ||
|---|---|---|---|---|---|---|---|---|---|
cortex phase | parenchymal phase | pelvic phase | |||||||
1 | No | No | Homogeneous | 44 | 62 | 101 | 99 | ND | ND |
2 | multi patchy | Multiple | Heterogeneous | 44 | 109 | 153 | 89 | Nutrient artery | ND |
3 | No | Yes | Slightly heterogeneous | 44 | 52 | 57 | 51 | No nutrient artery | ND |
4 | No | No | Homogeneous | 41 | 51 | 58 | 70 | ND | ND |
5 | No | No | Homogeneous | 37 | 54 | 62 | 66 | No nutrient artery | ND |
6 | No | Yes | Heterogeneous | 25 | 45 | 65 | 78 | ND | ND |
7 | No | No | Homogeneous | 34 | 57 | 63 | 67 | ND | ND |
8 | No | No | Homogeneous | 34 | 54 | 60 | 71 | ND | isointense on T1WI, isointense on T2WI with some slightly hyperintense areas in the center |