Table 2.
Clinical and radiological characteristics of patients with MMA
| Clinical characteristics | |
|---|---|
| Number of patients | 102 |
| Paris hospital | 44 |
| Toulouse hospital | 58 |
| Men, n (%) | 36 (35) |
| Age at first symptom, mean (SD) | 35.9 ± 23.8 |
| Age at diagnosis, mean (SD) | 39.4 ± 18.5 |
| Age at first neuropsychological assessment, mean (SD) | 43 ± 13 |
| Years of study, median (IQ) | 11 (11–14) |
| Delay first symptom/diagnosis (day), median (IQ) | 68 (0–497) |
| Ethnicity, n (%) | |
| Caucasian | 72 (70) |
| North African | 12 (12) |
| Asian | 10 (10) |
| Other | 8 (8) |
| Moyamoya angiopathy subtype, n (%) | |
| MMA disease | 64 (63) |
| MMA syndrome | 38 (37) |
| Bilateral MMA | 63 (62) |
| Family history, n (%) | 2 (2) |
| Clinical presentation, n (%) | |
| All strokes | 63 (62) |
| Ischemic stroke | 48 (47) |
| Hemorrhagic stroke | 15 (14) |
| TIA | 11(10) |
| Headache | 10 (9) |
| Incidental | 17 (16) |
| Epilepsy | 1 (1) |
| Vascular risk factors, n (%) | |
| Hypertension | 30 (29) |
| Smoking | 37 (36) |
| Dyslipidemia | 22 (22) |
| Imaging characteristics, n (%) | |
| Presence of transdural anastomosis | 21 (21) |
| Vertebro-basilar involvement | 16 (16) |
| Presence of one or more ischemic lesions | 75 (74) |
| Presence of one or more hemorrhagic lesions | 16 (16) |