Kentaro Shimizu, Norio Nakamura and Hideo Terao
Takanori Fukushima, Buichi Ishijima, Kimiyoshi Hirakawa, Norio Nakamura and Keiji Sano
✓ The authors report a new ventriculofiberscope useful in both diagnosing and operating on lesions of the ventricular system. The technique and its advantages are illustrated in representative cases.
Toshiaki Abe, Morihiro Sugishita, Satoshi Yatsuzuka, Koichi Tashibu, Hisashi Onoue, Takashi Suzuki and Norio Nakamura
✓ A transcallosal interforniceal approach was used for treatment of a posteriorly projecting high basilar bifurcation aneurysm with a neck located 30 mm above the posterior clinoid process. The aneurysm was successfully clipped via the third ventricle with minimal neurological deficits. This approach appears to be appropriate for basilar bifurcation aneurysms located more than 20 mm above the posterior clinoid process when the fundus projects posteriorly, and permits direct visualization of the aneurysmal neck and vital perforators with minimal brain retraction.