2: Brain Tumours Flashcards
What is a brain tumour
Abnormal mass of cells in brain parenchyma
What are primary brain tumours
Brain tumours that arise in brain parenchyma
What are secondary brain tumours
Other tumours that metastasise to the brain
What 5 tumours metastasise to the brain
- Breast
- Bowel
- Lung
- Melanoma
- Kidney
What is the most common tumour to metastasise to the brain
Lung carcinoma
What is the most common paediatric primary brain tumour
Pilocytic astrocytoma
What is the most severe paediatric primary brain tumour
Medulloblastoma
Where are pilocytic astrocytoma from
Astrocytes - usually posterior fossa
What is a histological diagnosis of pilocytic astrocytoma
Rosenthal fibres
Where do medulloblastomas arise from
Neuroectodermal tumours
Where do ependymoma arise
Ependymal cells
Where are ependymal cells seen
4th Ventricle
What do ependymoma’s cause
Obstructive hydrocephalus
Where does craniopharyngioma occur
Supra-tentorial
Where are craniopharyngioma’s derived from
Solid tumour of sellar region derived from Rathke’s pouch