Table 3.
MRI features of NMO patients with EBLs
| Radiologic features of the EBLs | n=16% |
|---|---|
| Acute lesions |
16(100%) |
| Tumefactive-like lesions |
4(25%) |
| ADEM-like lesions |
6(37.5%) |
| MS-like lesions |
5(31.25%) |
| PRES-like lesions |
1(6.25%) |
| Margins |
|
| Well defined |
9(56.25%) |
| Diffuse |
7(43.75%) |
| Mass effect |
|
| None |
13(81.25%) |
| Moderate |
2(12.5%) |
| Marked |
1(6.25%) |
| Singnal of the EBLs |
|
| T1W hypointense |
16(100%) |
| T2W hyperintense |
16(100%) |
| T2FLAIR hyperintense |
16(100%) |
| Enhanced pattern |
|
| Open ring |
1(6.25%) |
| None |
15(93.75%) |
| Nonconventional Neuroimaging of EBLs (n=9) |
|
| High intense signal in DWI |
9(100%) |
| ADC value increased | 9(100%) |
One EBLs appeared with GDE, which manifested as open-ring like pattern and was observed in one patient (25%) with tumefacive-like lesions. Contrast enhancement was absent in ADEM-like lesions, MS-like lesion and PRES-like lesions.