特集 内頚動脈後交通動脈瘤―原 著
内頚動脈後交通動脈分岐部瘤に対する後交通動脈を温存した塞栓術後の再発リスク
キーワード:
posterior communicating artery,
unruptured cerebral aneurysm,
coil embolization,
recurrence,
patency
2019 年 47 巻 3 号 p. 167-173
詳細
2019 年 47 巻 3 号 p. 167-173
Purpose: The aim of the present study was to assess the recurrence and retreatment rate after coil embolization of unruptured internal carotid artery-posterior communicating artery aneurysms (IC‑PC AN) classified according to the development of the posterior communicating artery (Pcom A) and to determine the risk factor of recurrence.
Methods: The authors examined 42 patients treated with coil embolization for IC‑PC AN in our department. We divided the IC‑PC ANs into 3 groups according to the development of the Pcom A as follows: fetal (group F), adult (group A), and hypoplastic types (group H). Patient data, angiographic findings, treatment information, and follow-up data were analyzed. We also analyzed the recurrence and retreatment rates, and determined the risk factor of recurrence.
Results: The recurrence and retreatment rates had no significant differences among the groups. We found higher-risk aneurysm (large aneurysm of >10 mm, partially thrombosed aneurysm, and recurrent aneurysm post clipping) was the only risk factor of recurrence after coil embolization.
Conclusion: The recurrence rate of Pcom A-preserving coil embolization for IC‑PC AN was not higher than that of coil embolization for IC‑PC AN with hypoplastic Pcom A.
