De novo intracranial aneurysm formation after Gamma Knife radiosurgery for vestibular schwannoma.
Vascular complications, including vessel occlusion and hemorrhage, can arise after radiosurgery; however, hemorrhage due to a ruptured de novo aneurysm after Gamma Knife radiosurgery (GKS) for tumor is extremely rare. To the authors' knowledge, only a single case of de novo aneurysm formation after GKS for vestibular schwannoma has been previously reported. In this study, they describe their experience with the treatment of a 74-year-old woman with subarachnoid hemorrhage limited to the cerebellopontine cistern, who had undergone GKS for vestibular schwannoma 5 years earlier. Cerebral angiography demonstrated a left distal anterior inferior cerebellar artery aneurysm; coil embolization was attempted and failed. However, self-resolution of the aneurysm was revealed on follow-up angiography.
Park
Keun Young
KY
Department of Neurosurgery, Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
Ahn
Jung Yong
JY
Lee
Jae Whan
JW
Chang
Jong Hee
JH
Huh
Seung Kon
SK
D000368:Aged; D002526:Cerebellar Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000209:etiology*; D009464:Neuroma, Acoustic / Q000601:surgery*; D016634:Radiosurgery / Q000009:adverse effects*; D013345:Subarachnoid Hemorrhage / Q000209:etiology