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Yoshida S, Kazekawa K, Kamatani K, Maruyama K, Takigawa K, Tashiro N, Hashiguchi Y, Yasaka M, Aikawa H, Go Y. Prediction of obliteration of unruptured cerebral aneurysm by residual aneurysm volume after flow diverter stent treatment. World Neurosurg X 2024; 22:100354. [PMID: 38469386 PMCID: PMC10926355 DOI: 10.1016/j.wnsx.2024.100354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/21/2024] [Indexed: 03/13/2024] Open
Abstract
Introduction There is no methodology to predict aneurysm occlusion using residual volume after flow diverter stent treatment. We retrospectively examined whether residual aneurysm volume at 6 months postoperatively can predict the degree of aneurysm obliteration at 1 year after flow diverter stent treatment. Materials and Methods This single institution study included 101 consecutive patients who underwent flow diverter stent treatment for unruptured cerebral aneurysm. Based on pre-treatment aneurysm volume, the percentage residual volume was calculated 6 months postoperatively. The volume of the aneurysm was determined using the volume calculation function of the cerebral angiography equipment. 1 year postoperatively, patients were classified into two groups: the good obliteration group (GG; O'KellyMarotta [OKM] grading scale: C and D) and the poor obliteration group (PG; OKM: A and B). Statistical analysis was performed to determine if there was a difference in residual aneurysm volume percentage at 6 months postoperatively between the two groups. Results A total of 20 patients were studied: 6 in the GG and 14 in the PG. Mean residual aneurysm volume at 6 months postoperatively in the GG was 33.1% (±34.7), while that in the PG was 80.6% (±24.8) (P=0.018). A residual aneurysm volume of ≥35.2% at 6 months postoperatively was significantly associated with poor aneurysm obliteration at 1 year postoperatively (AUC=0.88, P=0.008). Conclusions Residual aneurysm volume percentage at 6 months after flow diverter stent treatment might be able to predict the likelihood of aneurysm occlusion at 1 year postoperatively.
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Affiliation(s)
- Shinichiro Yoshida
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Kiyoshi Kazekawa
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Kaisei Kamatani
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Kousei Maruyama
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Kousuke Takigawa
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Noriaki Tashiro
- Depatment of Cerebrovascular Medicine, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Yoshiya Hashiguchi
- Depatment of Cerebrovascular Medicine, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Masahiro Yasaka
- Depatment of Cerebrovascular Medicine, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Hiroshi Aikawa
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
| | - Yoshinori Go
- Department of Neurosurgery, Fukuoka Neurosurgical Hospital, 5-3-1 Osa, Minamiku, Fukuoka, 811-1313, Japan
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