What has happened in the ventricles?
They look slightly enlarged, but this can be a normal finding for the patient's age. However, if you look in the occipital poles, there is a fluid-fluid level as hyperdense blood collects in the hypodense CSF. This means that there is now an intraventricular bleed. Recurrent scans may be required as blood lining the ventricles can inhibit CSF reabsorption and lead to hydrocephalus.
What are the likely risk factors for this?
Uncontrolled hypertension is the commonest risk factor for intracerebral bleeds. Other causes include amyloid angiopathy but this is usually in lobar bleeds.
Hyperdense left basal ganglia with surrounding oedema and mild mass effect. Layering of dense material in both ventricles.
Consistent with acute intracerebral haemorrhage.