Demographic and clinical data of all patients with hemispherectomy
| Patients | Sex | Age at Study (yr) | Age at Operation (yr) | Time since Operation (yr) | Diagnosis | Etiology Group |
|---|---|---|---|---|---|---|
| 1 | M | 8.1 | 5.9 | 2.2 | HME left | Congenital |
| 2 | M | 3.3 | 1.1 | 2.2 | HME left | Congenital |
| 3 | M | 14.8 | 3.7 | 11.1 | Cortical dysplasia righta | Congenital |
| 4 | M | 2.2 | 0.9 | 1.3 | HME left | Congenital |
| 5 | F | 2.7 | 2.7 | 0.02 | Cortical dysplasia righta | Congenital |
| 6 | M | 12.9 | 5.7 | 7.2 | Cortical dysplasia lefta | Congenital |
| 7 | F | 11.5 | 6.9 | 4.6 | Cortical dysplasia righta | Congenital |
| 8 | F | 0.9 | 0.8 | 0.1 | HME left | Congenital |
| 9 | M | 14.0 | 2.3 | 11.7 | Prenatal stroke right | Congenital |
| 10 | F | 8.9 | 4.1 | 4.8 | Prenatal stroke left | Congenital |
| 11 | F | 20.5 | 2.5 | 18.0 | Prenatal stroke right | Congenital |
| 12 | F | 8.7 | 2.2 | 6.5 | Rasmussen right | Acquired |
| 13 | F | 3.9 | 3.1 | 0.8 | Rasmussen left | Acquired |
| 14 | F | 18.1 | 9.8 | 8.3 | Rasmussen right | Acquired |
| 15 | F | 15.2 | 3.8 | 11.4 | Rasmussen right | Acquired |
| 16 | F | 12.2 | 4.1 | 8.1 | Rasmussen right | Acquired |
| 17 | F | 25.0 | 12.9 | 12.1 | Rasmussen right | Acquired |
| 18 | F | 20.7 | 4.4 | 16.3 | Postnatal stroke right | Acquired |
| 19 | F | 14.5 | 5.7 | 8.8 | Postnatal stroke right | Acquired |
Note:—HME indicates hemimegalencephaly.
↵a Includes an extensive unilateral malformation of cortical development affecting >1 cerebral lobe requiring full anatomic hemispherectomy rather than a more conservative neurosurgical approach.