Abstract

Endovascular embolization using liquid materials is a safe and effective treatment option for cerebral arteriovenous malformations(AVM). Onyx and n-butyl cyanoacrylate, currently available in Japan, have specific features. Appropriate embolic agents should be selected based on their characteristics. Transarterial embolization(TAE)is the standard endovascular treatment approach. However, there have been some recent reports regarding the efficacy of transvenous embolization(TVE). TVE is potentially curative for small AVM with hemorrhagic onset, inaccessible arterial feeders, deep location, and/or a single draining vein. In specific cases, TVE may provide a higher chance of complete obliteration of the AVM than TAE. Some unsolved problems need further clarification, such as the relative positions of liquid embolization against direct surgery, dealing with unruptured AVM, and effective treatment for high-grade AVM.

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