Delayed Hemorrhage From Completely Obliterated Arteriovenous Malformation After Gamma Knife Radiosurgery —Case Report—

Hiroaki MATSUMOTO; Tetsuji TAKEDA; Kanehisa KOHNO; Yoshiaki YAMAGUCHI; Keiji KOHNO; Akihiko TAKECHI; Daizo ISHII; Masaru ABIKO; Ushio SASAKI

doi:10.2176/nmc.46.186

Case Reports

Delayed Hemorrhage From Completely Obliterated Arteriovenous Malformation After Gamma Knife Radiosurgery

—Case Report—

Hiroaki MATSUMOTO, Tetsuji TAKEDA, Kanehisa KOHNO, Yoshiaki YAMAGUCHI, Keiji KOHNO, Akihiko TAKECHI, Daizo ISHII, Masaru ABIKO, Ushio SASAKI

著者情報

キーワード: arteriovenous malformation, gamma knife, radiosurgery, hemorrhage

ジャーナルオープンアクセス

2006 年 46 巻 4 号 p. 186-190

DOI https://doi.org/10.2176/nmc.46.186

詳細

抄録

A 43-year-old female was treated with gamma knife radiosurgery (GKS) for right frontal arteriovenous malformation (AVM) manifesting as absence seizures. Complete nidus obliteration was confirmed on angiography 4 years after GKS. However, she experienced recurrence of her previous seizures and delayed hemorrhage occurred within the treated nidus, despite absence of abnormalities by repeated angiography 81 months after GKS. She was treated conservatively and discharged home without neurological deficits. The risk of hemorrhage from obliterated AVM is significantly reduced but not eliminated after radiosurgery. Recanalization of thrombus that is too small to detect by neuroimaging may result in delayed hemorrhage.

責任著者(Corresponding author)

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