palisades and tumors. lung metastatic tumor in brain

of 21/21
Palisades and tumors

Post on 21-Dec-2015

215 views

Category:

Documents

2 download

Embed Size (px)

TRANSCRIPT

  • Slide 1
  • Palisades and tumors
  • Slide 2
  • Lung metastatic tumor in brain
  • Slide 3
  • A meningioma at a parasagittal location
  • Slide 4
  • Benign meningioma growing underneath the dura
  • Slide 5
  • Note compression caused by meningioma in the underlying cerebral hemisphere
  • Slide 6
  • Meningioma compressing the pituitary
  • Slide 7
  • Giantism can result from pituitary tumors in childhood
  • Slide 8
  • Slide 9
  • Benign ependymoma; note inaccessible site
  • Slide 10
  • Cystic astrocytoma of childhood
  • Slide 11
  • Glioma with mass effect
  • Slide 12
  • Low grade gliomas still have poor prognosis if present in a difficult to remove location
  • Slide 13
  • Large brain stem glioma
  • Slide 14
  • Cerebral hemisphere glioma; note absence of clear margin
  • Slide 15
  • Astrocytoma at low magnification; normal tissue at right
  • Slide 16
  • Glioblastoma multiforme
  • Slide 17
  • GBM: note necrosis, hemorrhage
  • Slide 18
  • Note palisading effect around necrotic region
  • Slide 19
  • Two models for the formation of pseudo-palisades in GBM
  • Slide 20
  • Palisading cells surrounding necrosis are typical of GBM
  • Slide 21
  • Model for formation of palisades