Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Detachable Coil Embolization for Saccular Posterior Inferior Cerebellar Artery Aneurysms

  • Jeon, Su-Gi (Department of Neurological Surgery, University of Ulsan College of Medicine, Asan Medical Center) ;
  • Kwon, Do-Hoon (Department of Neurological Surgery, University of Ulsan College of Medicine, Asan Medical Center) ;
  • Ahn, Jae-Sung (Department of Neurological Surgery, University of Ulsan College of Medicine, Asan Medical Center) ;
  • Kwun, Byung-Duk (Department of Neurological Surgery, University of Ulsan College of Medicine, Asan Medical Center) ;
  • Choi, Choong-Gon (Department of Radiology, University of Ulsan College of Medicine, Asan Medical Center) ;
  • Jin, Sung-Chul (Department of Neurosurgery, Seoul National University Bundang Hospital)
  • Published : 2009.09.28
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Abstract

Objective : Surgical treatment of posterior inferior cerebellar artery (PICA) aneurysms is challenging due to limited surgical accessibility. Endovascular approach has a benefit of avoiding direct injury to the brainstem or lower cranial nerves. Therefore, it has recently been considered an alternative or primary modality for PICA aneurysms. We retrospectively assessed outcomes following detachable coil embolization of saccular PICA aneurysms. Methods : From February 1997 to December 2007, we performed endovascular procedures to treat 15 patients with 15 PICA aneurysms. Fourteen patients with 14 PICA aneurysms morphology of which was saccular were reviewed retrospectively. Twelve patients had ruptured aneurysms. The aneurysms arose from the PICA origin site (n=12), the PICA lateral medullary segment (n=1), or the PICA tonsilomedullary segment (n=1). Results : Complete aneurysm occlusion was achieved in 10 patients, residual neck in 3, and residual sac in one. Radiological follow-up was performed in 7 patients with mean duration of 34.7 months (range, 1-97 months) and showed stable or complete occlusion in 6 patients. There were no rebleeding or retreatment after endovascular treatment. Thromboembolism was the only procedure-related complication (n=4 ; 28.6%). Asymptomatic PICA infarction occurred in two patients and symptomatic PICA infarction in two elderly patients with poor clinical grade. Of these procedural PICA infarction cases, 1 symptomatic PICA infarction patient developed ventriculitis and septic shock leading to death. The clinical outcome was good in 10 patients (71.4%). Conclusions : In the present study, detachable coil embolization has shown as an efficient modality for PICA saccular aneurysms challenging indications of microsurgery. However, thromboembolic complications should be considered, especially in poor clinical elderly patients with ruptured aneurysms.

Keywords

References

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