A large crossing-midline intra-axial mass at the genu of corpus callosum complicated with haemorrhage. It is associated with perilesional oedema and expansion of corpus callosum.
"Swirl sign" within the haemorrhagic mass (acute extravasation of blood into haematoma).
Haemorrhage extends into the ventricles as acute intraventricular haemorrhage and into the basal cisterns as acute subarachnoid haemorrhage.
Hydrocephalus with periventricular lucency which may represent transependymal CSF seepage.
Basal cisterns are effaced.
Evidence of previous left fronto-parietal craniotomy with left parietal lobe encephalomalacia from previous insult.