Term
|
Definition
| Fracture that crosses a suture |
|
|
Term
| Direct Parenchymal Injury |
|
Definition
| Contusion and laceration. Most commonly periorbital frontal lobes and terporal lobes. coup and contrecoup |
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Term
|
Definition
| Broad base deep to the point of impact. edema and hemorrhage. Old lesions are depressed, retracted, yellowish brown |
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Term
|
Definition
| Can cause coma, be caused by any motion (rotational). Within hours of injury. Increased microglia |
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|
Term
|
Definition
| Dural arteries are most vulnerable. Luicid interval. Lenticular on CT |
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|
Term
|
Definition
| Between dura and outer arachnoid layer. Bridging veins prone to tearing. Fresh is without extension to sulci. |
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|
Term
|
Definition
| Excessive Ca+2, acidosis, red neurons, eosinophilia, pyknosis, karyorrhexis, vacuolization |
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Term
|
Definition
| Area of at-risk tissue on the periphery of ischemia |
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|
Term
|
Definition
| <6 little change. 12 hrs: red neurons, cells disintegrate. 48 hr: pale swollen. 2-10 days: gelatinous and friable. 10-3 wks: liquification |
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Term
|
Definition
| Penetrating Arteries. in the lenticular nucleus |
|
|
Term
|
Definition
| Large areas of subcortical white matter with hypertensive encephalopathy |
|
|
Term
| Hypertensive Encephalopathy |
|
Definition
| atherosclerosis, thrombosis/emolization, arteriolar sclerosis |
|
|
Term
| Intraparenchymal Hemorrhage |
|
Definition
| HTN and CAA. 50% putamen. Vessels have basophilic, PAS-positive deposits |
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|
Term
|
Definition
| Cerebral amyloid angiopathy. Amyloid predisposes to intraparenchymal bleeds. restricted to leptomeningeal and cerebral cortical arterioles and capillaries |
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Term
|
Definition
| In the basal ganglia and thalamus |
|
|
Term
|
Definition
| In the lobes of the cerebral hemispheres |
|
|
Term
|
Definition
| Most commonly saccular aneurysm but also fusiform (atherosclerotic), mycotic, traumatic and dissecting. |
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|
Term
|
Definition
| 2%. Smoking and HTN. Circle of Willis. attenuated media, thickened intima. Adventitia is patent with parent artery |
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|
Term
|
Definition
| Afteriovenous malformations, caverous malformations, capillary telangiectasias, venous angiomas |
|
|
Term
| Arteriovenous malformations |
|
Definition
| tangled network of wormlike vessels. Shunting and headaches etc. |
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|
Term
|
Definition
| greatly distended, loosely organized, thin vessels without intervening nervous tissue. Hemorrhage, infarction, and calcification. |
|
|
Term
| Capillary telangiectasias |
|
Definition
| microscopic foci of dilated channels separated by normal brain. Most often pons |
|
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Term
|
Definition
| carices, ectatic venous channels. Includes Foix-Alajouanine |
|
|
Term
|
Definition
| Also angiodysgenetic necrotizing myelopathy. spinal cord and overlying meninges, often lumbosacral, ischemia myelomalacia. Slowly progressive |
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