Endoscopic third ventriculostomy has shown to be sufficient in the surgical treatment of occlusive hydrocephalus; also endoscopic choroid plexectomy was found to be safe and clinically effective in selected milder forms of communicating hydrocephalus. Fifty patients with occlusive hydrocephalus were treated by endoscopic third ventriculostomy at both Cairo and Mansoura University Hospitals from January 2001 through April 2003. The success rate of third ventriculostomy in this series was (80%). Choroid plexectomy as a complementary treatment for hydrocephalus was a successful technique in controlling the symptoms of hydrocephalus in one patient whom obstructive hydrocephalus became converted into communicating one after endoscopic third ventriculostomy