Recurrent Risk of Posterior Communicating Artery-preserving Coil Embolization for Internal Carotid Artery-Posterior Communicating Artery Aneurysm

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  • HIRAMATSU Masafumi
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • SUGIU Kenji
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • HISHIKAWA Tomohito
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • NISHIHIRO Shingo
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • KIDANI Naoya
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • TAKAHASHI Yu
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • MURAI Satoshi
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
  • DATE Isao
    Department of Neurological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences

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Other Title
  • 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

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<p>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.</p><p>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.</p><p>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.</p><p>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.</p>

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