Arteriovenous malformations (AVM)
What is an AVM?
An AVM is a collection of abnormal blood vessels between the
arteries and veins. In most patients it is congenital.
What are the symptoms of an AVM?
More than 60% of AVMs present with a haemorrhage (internal
bleed) which can cause anything from a moderate to severe headache
as well as neurological problems, such as epliepsy.
How are AVMs diagnosed?
Normally an MRI will be performed and
then detailed evaluation is by performing an angiography.
What is the treatment for an AVM?
Cerebral AVM's are mainly treated using microsurgery, however if
the AVM is small, Gamma Knife treatment can be
effective. AVMs can also be treated in the short-term by
embolisation (using a catheter) following which surgery or Gamma
Knife surgery would be required.
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| Scan of an AVM pre-gamma knife
surgery |
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Scan showing area where AVM existed
24 months post- surgery |
Further information on AVMs
Please contact the Gamma Kife Centre directly or go to
AVM Support UK.