Where does this happen?
Necrosis of neurons in Sommers sector CA1 of hippocampus, neurons in layers III and V of cortex, and cerebellar purkinje cells
What is hypoxia
Hypoglycemia
Cerebellar mass with a cyst
What is a pilocytic astrocytoma?
Opening pressure 100mm; clear, protein 38, glu 80
What is normal?
Failure of neural tube closure or primary bony defects
What is the pathogenesis of neural tube defects?
Ethanol toxic effect
What is atrophy of cerebellar vermis?
Hepatic encephalopathy
What is metabolic
Usually 60's & cross the midline
What is glioblastoma multiforme, primary type
Opening pressure 282, cloudy, protein 250, glu 35
What is acute meningitis, probably bacterial
Associated with increased maternal alpha fetoprotein
Methanol ingestion
What is globus pallidus necrosis?
Acute encephalopathy due to lead based paint
What is toxic
Usually arises in a preexisting astrocytoma, 40's
What is a glioblastoma multiforme, secondary type
Opening pressure 180, prot 49, glu 82, cell ct 90% lymphs
What is viral meningitis?
Cerebellar tumor obstructing 4th ventricle
What is noncommunicating hydrocephalus?
Cause of foot slapping gait
What is syphilis
Confusion with enteroviral encephalitis
What is inflammatory
This glioblastoma usually has better survival
What is IDH mutant type?
Opening pressure 185, clear, prot 50, glu 25, cell ct 100% lymphocytes
What is TB or fungal meningitis?
Enlarged posterior fossa, cerebellar vermis atrophy with hypoplastic cerebellar hemispheres, CSF cyst in posterior fossa, thinned occipital bone.
What is Dandy-Walker sundrome?
Overcorrection of hyponatremia
What is central pontine myelinolysis
Chronic ETOH ingestion with chronic pancreatitis and hepatic encephalopathy
What is toxic and metabolic
Has calcifications and a chicken-wire appearance with 'fried egg' nuclei; 40's with seizures
What is an oligodendroglioma?
Opening pressure 320mm, prot 60, glu 115, xanthochromic fluid
What is not infected, R/O ICH?
Downward displacement of cerebellar vermis, tonsils, and medulla; kinking of lower medulla, spina bifida with menigomyelocele
What is Arnold-Chiari type II malformation?