This operation was performed by Dr Nor Faizal Bin Ahmad Bahuri on a 1-year-old child with congenital hydrocephalus. This technique is the first choice treatment of hydrocephalus in children. The operation allows passage of cerebral spinal fluid through a channel created on the floor of the third ventricle and ETV will free the child from having an external device to divert excessive CSF in the brain. This operation can be performed in adult patients as well.