Neuroendoscopic third ventriculostomy in dysmorphic brains

Neuroendoscopic third ventriculostomy (NTV) has superseded shunting as the treatment of choice in non-communicating hydrocephalus. Intracranial develo pmental anomalies have been considered to be relative contraindications for this procedure. We present one patient with a Dandy-Walker malformation an d another with septo-optic dysplasia who presented with hydrocephalus. An N TV was performed successfully in both patients using a flexible neuroendosc ope and utilising transendoscopic Doppler ultrasound to ensure a safe targe t area for ventriculostomy.