Brain MR imaging findings at presentation between infectious (n = 35) and immune-related (n = 8) acute cerebellitis subgroups
| T2/FLAIR Hyperintense Signal | Infectious (No.) (%) | Immune-Related (No.) (%) | P Valuea |
|---|---|---|---|
| Unilateral cerebellar | 4 (11.42) | 2 (25.00) | .31 |
| Bilateral cerebellar | 27 (77.14) | 4 (50.00) | .19 |
| Brainstem | 1 (2.85) | 3 (37.50) | .016 |
| Supratentorial brain | 0 (0.00) | 3 (37.50) | .004 |
| Cerebellar white matter | 10 (28.57) | 1 (12.50) | .65 |
| Cerebellar gray matter | 25 (71.42) | 5 (62.50) | .68 |
| Associated findings | |||
| Involvement of vermis | 8 (22.85) | 1 (12.50) | 1.00 |
| Effacement of fourth ventricle | 12 (34.28) | 1 (12.50) | .39 |
| Effacement of posterior fossa subarachnoid spaces | 11 (31.42) | 0 (0.00) | .09 |
| Downward herniation | 15 (42.85) | 0 (0.00) | .03 |
| Upward herniation | 10 (28.57) | 0 (0.00) | .16 |
| Supratentorial hydrocephalus | 8 (22.85) | 0 (0.00) | .31 |
| Contrast enhancement | |||
| Leptomeningeal | 12 (34.28) | 2 (28.57) | 1.00 |
| Cortical | 7 (20.00) | 1 (14.28) | 1.00 |
| Diffusion-weighted imaging | |||
| Vasogenic edema | 20 (58.82) | 4 (50.00) | .71 |
| Cytotoxic edema | 6 (17.64) | 1 (12.50) | 1.00 |
↵a P is based on the Fisher exact test.