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Difference between revisions of "Neuropathology"
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→Vascular malformations: more types
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=Vascular malformations= | =Vascular malformations= | ||
Types:<ref name=pmid17076525>{{cite journal |author=Prayson RA, Kleinschmidt-DeMasters BK |title=An algorithmic approach to the brain biopsy--part II |journal=Arch. Pathol. Lab. Med. |volume=130 |issue=11 |pages=1639–48 |year=2006 |month=November |pmid=17076525 |doi= |url=}}</ref> | |||
#Arteriovenous malformation. | |||
#*Most important clinically - highest risk of bleeding. | |||
#Varix. | |||
#*One large (dilated) vein. | |||
#Venous angioma. | |||
#*Many small veins. | |||
#Caverous malformation. | |||
#*Vessels are back-to-back (no intervening parenchyma). | |||
==Arteriovenous malformation== | ==Arteriovenous malformation== | ||
===General=== | ===General=== | ||
* | *High risk for bleeding vis-a-vis other vascular malformations. | ||
===Gross=== | |||
Features:<ref name=pmid17076525>{{cite journal |author=Prayson RA, Kleinschmidt-DeMasters BK |title=An algorithmic approach to the brain biopsy--part II |journal=Arch. Pathol. Lab. Med. |volume=130 |issue=11 |pages=1639–48 |year=2006 |month=November |pmid=17076525 |doi= |url=}}</ref> | |||
*Classically wedge-shaped - with base toward superficial aspect and apex toward deep aspect (like pulmonary infarcts). | |||
*Usually middle cerebral artery distribution. | |||
===Microscopic=== | ===Microscopic=== | ||