Brain tumors

Question 1

• Brain tumors:*
• Which tumors are more commone and what is the first sing?*

Answer 1

*primary brain tumours are less common than secondary (metastatic) tumours
- seizures may be the first sign of brain tumours

Question 2

Brain tumors:

Provide examples :

Answer 2

1. Glial cell tumor: (Astrocytoma)
2. Meningioma
3. Neuroma: (Ganglioma)
4. Poor differentiated tumor: (Medulloblastoma) located in Cerebellum
5. Metastatic 2ndary tumor: common source (in order)
   * Lung, breast, kidney, Gl tract, skin)*

Question 3

Brain tumors:

Name 5 specific types:

Answer 3

Glial cell tumour:

• Astrocytoma – if Grade IV = glioblastoma multiforme – most common brain malignancy;
• also the most aggressive BUT localised (aka semimalignant)
• Oligodendroglioma – mainly in frontal lobe
• Ependymoma – mainly in ventricles
• Schwannoma – mainly in CN VIII
• Glioma – benign, often arise in CN II
• - Meningioma*
• Neuroma: Ganglioma
• Poorly differentiated tumour: Medulloblastoma

– most common primary brain malignancy in children; mainly in cerebellum
- Metastatic tumours: lungs > breast > kidneys > GI tract > skin [order from the most common]