Acute intracranial haemorrhage straddling the genu of the corpus callosum and extending into the ventricles is again demonstrated. Anterior interhemispheric arteriovenous malformation is again demonstrated, nidus approximately 2.5 x 2.2 x 2.5 cm in size, with supply predominantly from the left anterior cerebral artery and draining to the superior sagittal sinus.
The draining veins have not been completely imaged on MRA (not shown). T2/FLAIR hyperintensity surround the haematoma, compatible with reactive oedema. Sulcal T2 FLAIR high signal in both cerebral hemispheres may reflect subarachnoid haemorrhage or hyper-oxygenation. No hydrocephalus. No restricted diffusion.
Arteriovenous malformation measuring ~2.5 cm in greatest diameter with supply predominantly from the left ACA and draining to the super sagittal sinus.