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CNS Patho (Brain parenchyma (Neurones (Medulloblastoma (Infratentorial)…

- - - - Sheets of small cells, high N/C ratio, mitoses
        Rosettes
        “Carrot shaped” nuclei
  - - - Astrocytoma
        
        Pilocytic astrocytoma (Grade I)
        Diffuse astrocytoma (Grade II)
        Glioblastoma multiforme (Grade IV)
      - Oligodendroglioma
        
        Uniformed round cells with
        ‘fried egg’ appearance
        Respond to chemotherapy
- - - - Tooth-forming epithelium within the suprasellar region
        Cystic, containing yellow viscous fluid (‘engine oil’)
- - - - Meningothelial whorls, uniformed ovoid cells, +/- psammoma bodies, nuclear inclusions