Table 2.
Quantitative lesion parameters in children with ADEM from Callen and colleagues25
| Lesion Counts |
|||
|---|---|---|---|
| Mean | Minimuma | Maximum | |
| Deep white matter | 6.8 | 0 (4) | 29 |
| Juxtacortical white matter | 9.7 | 0 (2) | 38 |
| Periventricular white matter | 1.4 | 0 (9) | 10 |
| Callosal white matter | 1.1 | 0 (7) | 4 |
| Cortical gray matter | 7.5 | 0 (4) | 35 |
| Deep gray matter | 2.6 | 0 (6) | 8 |
| Brainstem | 1.7 | 0 (6) | 6 |
| Cerebellar | 0.8 | 0 (11) | 4 |
| Small | 15.8 | 2 | 41 |
| Medium | 5.6 | 0 (3) | 18 |
| Large | 3.5 | 0 (6) | 18 |
| Total | 24.8 | 3 | 62 |
Small: <1 cm axial, <1.5 cm longitudinal; Medium: 1–2 cm axial, 1.5–2.5 cm longitudinal; Large: >2 cm axial, >2.5 cm longitudinal.
a
Number in parentheses represents the number of children with ADEM (n = 20) who had zero lesions in this category.
Data from Callen DJ, Shroff MM, Branson HM, et al. Role of MRI in the differentiation of ADEM from MS in children. Neurology 2009;72:968–73.