Unusual Cause of Hemiparesis in a Child

A 12 years old child presented to a tertiary hospital in India with weakness and poor growth of the left side of the body since birth (Figure 1). He was born at full gestation through a normal delivery and cried after a few minutes of birth following manual stimulation. The antenatal period was uneventful. There was no history of head trauma or any serious neurological illness after birth. He had a normal intellect with a mild speech delay; there was no history of seizures. Examination revealed a left complete hemiparesis and spasticity with atrophy of the muscles of the left side. CT scan revealed an intracranial cyst in the right hemisphere with a well-defined border and central attenuation the same as CSF, communicating with subarachnoid space and ventricle (Figure 2).