Treatment: Other Procedures & Management
Endoscopic third ventriculostomy (ETV)
Endoscopic third ventriculostomy is a procedure creating a new CSF pathway to treat certain hydrocephalus, an alternative to a shunt in some Chiari-related cases.
In short: Endoscopic third ventriculostomy (ETV)
- It creates a new opening for CSF to bypass an obstruction.
- It treats certain types of hydrocephalus without a shunt.
- It is an alternative to a shunt in selected cases.
- It may be used when hydrocephalus accompanies Chiari.
What it is
Endoscopic third ventriculostomy (ETV) is a minimally invasive procedure that treats certain types of hydrocephalus by creating a new opening (in the floor of the third ventricle) for cerebrospinal fluid to bypass an obstruction. It is an alternative to a shunt in selected cases, including some where hydrocephalus accompanies Chiari.
Understanding Endoscopic third ventriculostomy (ETV)
For hydrocephalus caused by an obstruction to CSF flow, ETV uses an endoscope to make a small opening that lets CSF flow around the blockage and be absorbed — avoiding the need for a permanent shunt and its associated long-term risks (such as shunt malfunction). Whether ETV is suitable depends on the cause and type of hydrocephalus; it works best for certain obstructive patterns. In the context of Chiari (where associated hydrocephalus may occur, especially in type II or with related obstruction), ETV may be an option to treat the hydrocephalus. As with shunting, treating associated hydrocephalus may be prioritized in the overall management. The choice between ETV and a shunt is individualized. Understanding ETV clarifies a shunt-alternative for treating certain hydrocephalus that can accompany Chiari.
Why it matters
Understanding ETV helps families see a shunt-free option for treating certain hydrocephalus that can accompany Chiari — creating a new CSF pathway — used in selected cases based on the type of hydrocephalus.
Common questions
What is ETV?
A procedure creating a new CSF pathway to bypass an obstruction.
How does it differ from a shunt?
It avoids a permanent shunt by rerouting CSF flow.
When is it used in Chiari?
In selected cases of associated hydrocephalus, based on the type.
Bottom line
Endoscopic third ventriculostomy creates a new CSF pathway to treat certain hydrocephalus, a shunt-alternative used in selected Chiari-related cases.
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