抄録
Clipping a vertebrobasilar union aneurysm is one of the most difficult surgical procedures, because it is deep and surrounded by many important structures, such as the brain stem, lower cranial nerves and cerebellum.
We have experienced a successful clipping of the aneurysm at this portion through a transpetrosal-anterosigmoidal approach. We report it and discuss the approaches to aneurysm at this portion.
This approach has many advantages: 1) A small scalp incision. 2) Drilling the posterior pyramis is easy, because the procedure is superficial. 3) Both side of parent artery of the aneurysm can be kept. 4) Little damage to the brain stem, cerebellum and cranial nerves by retractions. 5) Short cut to the aneurysm. 6) A subtemporal approach can be easily combined if it should be required.
