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There are a bunch of small veins in the right cerebellar hemisphere draining predominantly towards a central vein that runs to the confluence of sinuses. There is also drainage through a thinner vein that runs anteriorly to tentorial veins reaching the right transverse sinus. No cavernous malformation is identified.
Conclusion: Developmental venous anomaly in the right cerebellar hemisphere. No signs of associated cavernous malformations.