Causes & Risk Factors
Vein of Galen malformation
A vein of Galen malformation is a rare blood vessel malformation in the brain that can cause hydrocephalus among other effects.
In short: Vein of Galen malformation
- It is a rare malformation of deep brain blood vessels.
- It can affect CSF flow and absorption.
- It can cause hydrocephalus and other serious effects.
- It is managed by specialized teams.
What it is
A vein of Galen malformation is a rare congenital malformation of the blood vessels deep within the brain, in which arteries connect abnormally to a large deep vein. It is a complex condition with effects beyond hydrocephalus.
Understanding Vein of Galen malformation
The abnormal blood flow and pressure in a vein of Galen malformation can affect CSF flow and absorption, contributing to hydrocephalus, and can also strain the heart and affect brain development. Because it involves both the blood vessels and the CSF system, it is managed by specialized teams, often including interventional neuroradiology (to treat the malformation) and neurosurgery (to address hydrocephalus when present). The condition is serious and complex, and care is highly individualized. It is identified on brain imaging, including vascular imaging.
Why it matters
Understanding vein of Galen malformation helps families see how a rare blood vessel malformation can contribute to hydrocephalus through its effects on CSF dynamics, and why specialized, multidisciplinary care is needed.
Common questions
What is a vein of Galen malformation?
A rare malformation of deep brain blood vessels.
Can it cause hydrocephalus?
Yes — it can affect CSF flow and absorption.
Who manages it?
Specialized, multidisciplinary teams.
Bottom line
A vein of Galen malformation is a rare deep brain vascular malformation that can cause hydrocephalus and requires specialized care.
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