An extradural haematoma usually results from a tear in the middle meningeal artery and is almost always associated with a skull fracture.
A subdural haematoma results from bleeding from the veins between the brain and its outer layer, the dura. They can be acute, chronic or acute on chronic.
Intracerebral haematomas often occur in patients with high blood pressure, patients who are taking Warfarin and in patients with a bleeding intracranial aneurysm.
4 different surgical interventions are described: 1. Simple aspiration, 2. Craniotomy with open surgery, 3. Endoscopic evacuation, 4. Stereotactic aspiration.