Nontraumatic hemorrhage Flashcards
What age group gets hypertensive hemorrhage? Where are they usually located?
60-80yo
Basal ganglia > thalamus > pons > dentate nuclei
What it the typical appearance of a hemorrhage due to anticoagulation?
Complex, due to rebleeds
Where do cerebral microhemorrhages occur? What associated condition are they seen in?
Deep cerebral and cerebellar structures in presence of underlying WM disease
Amyloidosis - cortex, cortical surface, subcortical WM
What age gets amyloidosis? What is the appearance of amyloid associated bleeds?
> 70yo
Large bleeds, fluid levels, Grey and white matter, posterior with “mirror” configuration, nonarterial distribution
What is superficial siderosis? Who gets it?
Leptomeningeal deposition of hemosiderin
Seen after recurrent SAH, CAA
What is the likely cause of germinal matrix hemorrhages? Who gets them?
venous occlusion and thrombosis
premature 28-32 weeks
What are the grades of germinal matrix hemorrhage?
1 - confined to germinal matrix
2 - extension into lateral ventricle without hydrocephalus
3 - IVH and hydrocephalus
4 - hemorrhage in periventricular white matter
What is periventricular leukomalacia?
How does it image?
Infarction and coagulation necrosis of parasagittal watershed zones(between centripetal and centrifugal vascular systems)
Hyperechoic regions neighboring atria of lateral ventricles on US
CT/MR: Periventricular hemorrhage
Reactive astrocytosis, gliosis, atrophy
Pronounced in occipital horns and atria of lateral ventricles
What is the association with periventricular leukomalacia?
Intracranial hemorrhage in 50%
Atrophy of white matter
Dilated occipital/atria of lateral ventricle
Undulating outer border of lateral ventricles
Atrophy of posterior corpus callosum
PVL
