Editing Cerebral arteriovenous malformation (section)

=== Surgical ===
Surgical elimination of the blood vessels involved is the preferred curative treatment for many types of AVM.<ref name="Mayo-Treatment" /> Surgery is performed by a [[neurosurgeon]] who temporarily removes part of the skull ([[craniotomy]]), separates the AVM from surrounding brain tissue, and resects the abnormal vessels.<ref name="Mayo-Treatment" /> While surgery can result in an immediate, complete removal of the AVM, risks exist depending on the size and the location of the malformation. The AVM must be resected en bloc, for partial resection will likely cause severe hemorrhage.<ref name=":0" /> The preferred treatment of Spetzler-Martin grade 1 and 2 AVMs in young, healthy patients is surgical resection due to the relatively small risk of neurological damage compared to the high lifetime risk of hemorrhage. Grade 3 AVMs may or may not be amenable to surgery. Grade 4 and 5 AVMs are not usually surgically treated.<ref>{{cite journal|last=Starke|first=RM|journal=Br J Neurosurg|year=2009|volume=23|pages=376–86|pmid=19637008|doi=10.1080/02688690902977662|title=Treatment guidelines for cerebral arteriovenous malformation microsurgery|issue=4|s2cid=26286536|display-authors=etal}}</ref>