内頸動脈後交通動脈分岐部動脈瘤の手術—213例の経験から

Surgical Treatment of the Internal Carotid-Posterior Communicating Artery Aneurysm:From the Experience of 213 Cases

Ⅰ．はじめに

　われわれは1975年9月までの14年間に嚢状脳動脈瘤直接手術1,000症例を経験した．就中，いわゆる内頸動脈後交通分岐部動脈瘤（以下ICPC-AN）は213例であり，これら症例の外科的治療に関し検討を試み，この部動脈瘤の手術要点につき考察を加え報告する．

213 cases of so-called posterior communicating artery aneurysm submitted to surgical operation without using microscope were reviewed from the technical point of view.

Aneurysm project boradly to two directions, i. e. postero-inferior and lateral directions. We have treated these aneurysms with two very distinct operative approaches in order to reach the aneurysmal neck from the right angle.