Intracranial Tumours and other SOLs
Space-Occupying Lesions
Tumours - 30% are metastatic, commonly from lung, breast, kidney, skin
Other SOLs – Aneurysm, Abscess, Chronic subdural haematoma, Granuloma, Cyst
Types of Intracranial Tumours
Benign – Meningioma
Malignant – Glioma – 3 subtypes, from most to least malignant are:
Glioblastoma
Oligodendroglioma
Ependymoma
Pituitary Tumours – Occurs just below Optic chiasm
Acoustic Neuroma (Vestibular Schwannoma) – Occurs at Cerebellopontine angle
Presentation
Raised ICP – Headache, Papilloedema, N+V
Seizures – SOL needs to be excluded in all adult-onset seizures
Evolving focal neurological symptoms
Personality change – Irritability, Lack of initiative, Socially inappropriate behaviour
Investigations
MRI
Biopsy
N.B. Avoid LP before imaging due to risk of coning.