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Fig 1. A 44-year-old man with seizures and a left parietal AVM.
A, A 3.5-cm left parietal AVM with superficial and deep venous drainage (Spetzler and Martin grade IV).
B, The AVM shows 80% obliteration with a single Onyx injection of 4.8 mL in 64 minutes.
C, Onyx cast after embolization.
D, Complete obliteration of the AVM 2 years after gamma knife radiosurgery.
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