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There is small volume crescentic acute haemorrhage in the posterolateral aspect of the left cerebellar hemisphere with minor hypoattenuating halo. Other acute blood extends to the undersurface of the tentorium. There is minimal localised mass-effect. There is no hyperdensity in the adjacent transverse and the sigmoid sinuses.
At the medial and the medial superior aspect of the left cerebellar haematoma, there is a compact niche of vessels measuring 13 mm transverse x 13 mm craniocaudal x 9 mm AP in keeping with a pial arteriovenous malformation. The main arterial feeders are via distal branches of the left superior cerebellar artery with contribution from distal branches of the left PICA. The main venous outflow is through cortical veins draining into the medial aspect of the left transverse sinus and and the torcula herophili.
There is no aneurysm or severe steno-occlusive lesion in the major intracranial arteries. There is adequate contrast opacification of the major dural venous sinuses and the deep cerebral venous system.