CNS tumours
- The most common primary brain tumor is a glioma, specifically astrocytomas, with glioblastoma being the most aggressive and prevalent type in adults. Glioblastoma multiforme is characterized by central necrosis, ring enhancement, and cross‑midline infiltration (“butterfly glioma”).
- In children, pilocytic astrocytoma is the most common brain tumour.
📚 A man has headache, confusion, and right hemiparesis. CT shows a 4 cm left frontal lesion with central necrosis crossing the midline via the corpus callosum and extensive edema. Diagnosis?
- Central neurocytoma
- Ependymoma
- Meningioma
- Oligodendroglioma
- Glioblastoma multiforme