Etiologies

No. (percent)

Tuberous sclerosis (includes one with hemimegalencephaly)

3 (16.66)

Mitochondrial diseases

3 (16.66)

Lissencephaly with heterotopia and polymicrogyria

3 (16.66)

Hypoxic-ischemic encephalopathy (HIE) sequela

(one case had Williams syndrome)

2 (11.11)

Trisomy 21

2 (11.11)

Trisomy 15

1 (5.56)

Meningitis with infarct

1 (5.56)

Frontal heterotopia

1 (5.56)

Congenital hypothyroidism

1 (5.56)

Septo-optic dysplasia

1 (5.56)