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fr amirsys osborne 2nd ed
sid 63 under neurosarcoid
Solitary/multifocal CNS masses+abnormal CXR (CNS involved in 5% clinical/27% autopsy, 50% asymptomatic)
Focal or infiltrating granulomas
small vessel angiitis(diffuse white matter involvement?)/vasculitis
May coat CN, fill internal auditory canal
Great mimicker!
Varying enhancement
Hydrocefalus
Hypointense matter in subarachnoid space.
50% hyperintense periventrivular matter on flair.
Diff: non-restricted.
Diff:
meningitis, meningeoma, infundibular histiocytosis
metastasis, periventr WM
Brain parenchyma(22%),Spine (25%), Meninges(30-50%), infundibulum, hypothalamus, perivascular
orbit, cerebellopontine angle, internal auditory canal, cranial nerves(30-50%)