Right frontal cystic cavity with heterogeneous signal and haemosiderin staining. Superficial siderosis in the anterior aspect left superior frontal gyrus and overlying anterior surface left frontal lobe. Further focus of blooming at the grey-white matter interface left temporal lobe. Associated superficial siderosis at adjacent sulci.
No associated abnormal contrast enhancement.
The right patchy periventricular and subcortical white matter FLAIR hyperintensity in keeping with chronic small vessel ischaemic disease. Diffuse parenchymal atrophy within expected limits for a patient of this age.
Time-of-flight MRA is unremarkable. No intracranial aneurysm. No abnormal vessel.
Conclusion:
Evolving left frontal haematoma with no evidence of underlying lesion.
Additional focus of haemorrhage at the grey-white matter interface left temporal lobe, suggests amyloid angiopathy as likely underlying aetiology.