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