Table 3. Magnetic Resonance Imaging Findings.
| Finding | Patients, No. (%) | ||
|---|---|---|---|
| Not immunosuppressed (n = 43) | Immunosuppressed (n = 35) | Total (N = 78) | |
| No abnormal findings | 17 (40) | 12 (34) | 29 (37) |
| Acute T2 FLAIR hyperintensities | 18 (42) | 19 (54) | 37 (47) |
| Brain stem (cerebral peduncle, pons, midbrain) | 13 (30) | 15(43) | 28 (36) |
| Thalamus | 0 | 4 (11) | 4 (5) |
| Mesial temporal lobe | 2 (5) | 1 (3) | 3 (4) |
| Basal ganglia | 0 | 1 (3) | 1 (1) |
| Cortical regions | 1 (3) | 0 | 1 (1) |
| Cerebellum | 1 (2) | 1 (3) | 2 (3) |
| Spinal cord | 1 (2) | 0 | 1 (1) |
| Leptomeningeal enhancement | 7 (16) | 6 (17) | 13 (17) |
| Cauda equina and nerve roots | 0 | 1 (3) | 1 (1) |
| Cortical regions | 3 (7) | 3 (9) | 6 (8) |
| Cerebellum | 0 | 1 (3) | 1 (1) |
| Diffuse dural enhancement | 1 (2) | 0 | 1 (1) |
| Acute infarcta | 7 (16) | 4 (11) | 11 (14) |
| Cortical region infarct | 2 (5) | 0 | 2 (3) |
| Basal ganglia, lacuna infarct | 2 (5) | 1 (3) | 3 (4) |
| Pontine infarct | 2 (5) | 1 (3) | 3 (4) |
| Cerebellum | 0 | 1 (3) | 1 (1) |
| Acute diffusion restriction in centrum semiovale and corpus callosum | 4 (9) | 1 (3) | 5 (6) |
Abbreviation: FLAIR, fluid-attenuated inversion recovery.
a
All areas of acute ischemic or diffusion restriction were tiny.