Abstract
This is a review article of the current status of aneurismal treatment in Japan. In the treatment of acutely ruptured aneurysms, the ISAT and the CARAT studies have a strong impact and the treatment modality has new changed from clipping to endovascular coil treatment. With an unruptured aneurysms, coil treatment still has a problem in the long-term rupture prevention. The present indication is for aneurysms larger than 5 to 7mm and situated in particular anatomical locations where the clipping appears to be difficult, such as paraclinoidal, cavernous and vertebral basilar territory. New devices such as the hydro-coil, drug-eluting coil, liquid materials, intracranial stent and covered stent were also reviewd.
