Direct Vertebral Artery Access for Coil Embolization of a Partially Thrombosed Mid-Basilar Trunk Aneurysm: Technical Limitations.

Partially thrombosed mid-basilar aneurysms are difficult to treat both surgically and endovascularly. We present a case where endovascular access to the aneurysm was very challenging requiring direct exposure and cannulation of the V1 segment to successfully embolize with coils and discuss the technical limitations of this approach.