Brain Flashcards
Most common extra axial tumor?
Meningioma
Most common site of metastasis in brain?
Parenchyma
Most common mass in aids
Toxoplasmosis
How to differentiate between lymphoma and toxo
1- Thallium avid lymphoma
2- lymphoma increased perfusion,toxo opposite
Most common solid pineal mass
Germinoma
Amyloid angiopathy definitve diagnosis
Biopsy
Herpes encephalitis diagnosis
Csf sampling with PCR for HSV dna
Avm treatment
Liquid embolics , resection
Diagnose PML
Jc polyomavirus antigen
Most common location of av fistula
Transverse and sigmoid sinuses
Hemimegalencephaly associations
Nf1
TS
Klippel trenaunay weber
Next step hemimegalencephaly
Always check contrlateral side. If affected surgery is contraindicated
Most common herniation
Subfalcine
HIE most sensitive sequences in first few hours
DWI and spectroscopy
TRx of septic emboli
Antibiotics 4-6 weeks
Rupture immediate closure
Hiv patient lymphoma vs toxoplasmosis management
Pyrimethanamine sulfadazine
If failed do bx
Most common pediatric suprasellar tumour
Craniopharyngioma
Diagnose leptomeningeal carcnomatosis highest sensitivity
Lumbar puncture
Craniopharyngioma types
Adamantinoimatous : cystic in children
Papillary: solid enhancing tumour
Tuberculous meningitis diagnosis
Csf sampling
SAH diagnosis if negative on ct
LP
Ruptured anuerysm trx
Coiling then monitoring for vasospasm
Intracranial lipoma most common location
Pericallosal
Most sensitive mesiotemporal sclerosis sequence
Flair
