Aneurysms Associated with Hyperplastic Anterior Choroidal Arteries: Three Cases with Literature Review

Takahiro Uno; Katsunori Asai; Tomoki Kidani; Yoshitsugu Nishijima; Takaaki Matsumoto; Masayoshi Kida; Mao Kanechi; Yosuke Fujimi; Koji Kobayashi; Hideki Kuroda; Shuhei Kawabata; Nobuyuki Izutsu; Yonehiro Kanemura; Toshiyuki Fujinaka

doi:10.5797/jnet.cr.2024-0097

Case Report

Aneurysms Associated with Hyperplastic Anterior Choroidal Arteries: Three Cases with Literature Review

Takahiro Uno, Katsunori Asai , Tomoki Kidani, Yoshitsugu Nishijima, Takaaki Matsumoto, Masayoshi Kida, Mao Kanechi, Yosuke Fujimi, Koji Kobayashi, Hideki Kuroda, Shuhei Kawabata, Nobuyuki Izutsu, Yonehiro Kanemura, Toshiyuki Fujinaka

Author information

Takahiro Uno
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Katsunori Asai Corresponding author
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Tomoki Kidani
Department of Neurosurgery, Osaka Neurological Institute, Toyonaka, Osaka, Japan
Yoshitsugu Nishijima
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Takaaki Matsumoto
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Masayoshi Kida
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Mao Kanechi
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Yosuke Fujimi
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Koji Kobayashi
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Hideki Kuroda
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Shuhei Kawabata
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Nobuyuki Izutsu
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Yonehiro Kanemura
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan
Institute for Clinical Research, NHO Osaka National Hospital, Osaka, Osaka, Japan
Toshiyuki Fujinaka
Department of Neurosurgery, NHO Osaka National Hospital, Osaka, Osaka, Japan

Keywords: hyperplastic anterior choroidal artery, anterior choroidal artery, aneurysm

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2025 Volume 19 Issue 1 Article ID: cr.2024-0097

DOI https://doi.org/10.5797/jnet.cr.2024-0097

Details

Abstract

Objective: A hyperplastic anterior choroidal artery (AchA) is a rare anomalous vessel that perfuses the posteromedial aspects of the cerebrum in place of the posterior cerebral artery. We describe 3 cases of hyperplastic AchA found among 61 patients with AchA aneurysms who underwent surgical or endovascular treatment at our institution.

Case Presentation: All 3 cases were diagnosed as hyperplastic AchA type 2 according to the Takahashi classification, indicating an anomalous branching temporal artery perfusing the medial temporal lobe. We performed coil embolization for 2 cases and surgical clipping for the third. One embolization case experienced recurrence after 3 years and underwent clipping. All procedures were conducted without complications.

Conclusion: Hyperplastic AchA can be encountered during aneurysm treatment. These cases emphasize the importance of evaluating the vascular anatomy to determine the optimal treatment strategy.

Corresponding author

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