From: Added value of delayed post-contrast FLAIR in diagnosis of metastatic brain lesions
Group | Conspicuity of enhancement | Lesions | Supra- or Infratentorial | Involved anatomy | Size | Number of lesions |
---|---|---|---|---|---|---|
1 | Only on delayed post-contrast FLAIR | 16 | Infratentorial | Leptomeningeal | > 2.5 cm | 1 |
Supra-tentorial | Leptomeningeal | > 2.5 cm | 2 | |||
0.5– < 1.5 cm | 1 | |||||
1.5 < 2.5 cm | 4 | |||||
Tiny cortical | < 0.5 cm | 7 | ||||
0.5–> 1.5 cm | 1 | |||||
2 | Only bon CE T1 | 1 | Supra-tentorial | Subependymal tiny nodule | < 0.5 cm | 1 |
3 | Equally on CE T1 and delayed post-contrast FLAIR | 28 | Infratentorial | White matter | 0.5– < 1.5 cm | 1 |
Supra-tentorial | White matter | < 0.5 cm | 4 | |||
0.5– < 1.5 cm | 3 | |||||
1.5– < 2.5 cm | 3 | |||||
> 2.5 cm | 8 | |||||
Tiny cortical | < 0.5 cm | 2 | ||||
Pachymeningeal | ||||||
> 2.5 cm | 4 | |||||
Leptomeningeal | < 0.5 cm | 1 | ||||
1.5– < 2.5 cm | 2 | |||||
4 | Better on delayed post-contrast FLAIR | 43 | Infratentorial | White matter | < 0.5 cm | 3 |
0.5– < 1.5 cm | 2 | |||||
1.5– < 2.5 cm | 1 | |||||
> 2.5 cm | 2 | |||||
Supra-tentorial | White matter | 0.5– < 1.5 cm | 11 | |||
1.5– < 2.5 cm | 4 | |||||
> 2.5 cm | 11 | |||||
Pachymeningeal | 1 | |||||
Leptomeningeal | 4 | |||||
Tiny cortical | 4 | |||||
5 | Better on CE T1 | 11 | Infratentorial | White matter | < 0.5 cm | 1 |
0.5– < 1.5 cm | 2 | |||||
> 2.5 cm | 1 | |||||
Supra-tentorial | White matter | 0.5– < 1.5 cm | 3 | |||
> 2.5 cm | 2 | |||||
Pachymeningeal | 2 |