Endoscopic third ventriculostomy in the treatment of hydrocephalus: A 20-year retrospective analysis of 209 consecutive cases.

Background: Endoscopic third ventriculostomy (ETV) has been shown to be a sufficient alternative to shunts in surgical treatment of obstructive hydrocephalus. Long-term failure, age limitations, and outcome by cause are some of the issues debated in literature. The objective of this article is to analyze the clinical success and failure of ETV and its main complications.