Table 1.
MRI Findings in HTLV-I Carriers and HAM/TSP Patients, Shown as Percentage of Total or as Median (Interquartile Range)
| Findings on MRI | Carriers (n = 20) | HAM/TSP (n = 10) |
|---|---|---|
| One or more lesions | 85% (17) | 80% (8) |
| Lesions 3–6 mm | 80% (16) | 70% (7) |
| Lesions > 6 mm | 15% (3) | 20% (2) |
| Confluent lesions | 35% (7) | 20% (2) |
| Median number of lesions | 4.5 (2–8) | 5 (2–16) |
| Median number of subcortical lesions | 3 (1–7) | 3.5 (1–13) |
| Median number of paraventricular lesions | 1 (0.5–2) | 0.5 (0–2) |
| Posterior fossa lesions | 0 (0–0)a | 0 |
| Median lesion volume (ml) | 1.1 (0.2–8.4) | 3.0 (0.1–12.7) |
| Atrophy | 0.3 (0–0.9) | 0.7 (0–1.0) |
a
One carrier had a single brainstem lesion.