• Alessandra Turrini, Marcello D'Andrea, Vincenzo Antonelli, and Luigino Tosatto.
• Department of Neurosurgery, Maurizio Bufalini Hospital, Cesena, Italy.
• World Neurosurg. 2021 Jan 1; 145: 119-126.

BackgroundIsolated spinal artery aneurysms are an extremely rare cause of subarachnoid hemorrhage. A limited number of case reports and case series have been reported in the literature. Treatment options include conservative management, surgical clipping/trapping, and endovascular procedures. Owing to the uncertain natural history of these lesions, there is no consensus about the optimal treatment.Case DescriptionA 64-year-old man presented with subarachnoid hemorrhage from a ruptured anterior spinal artery aneurysm at the C1 level. Following initial conservative management, surgical treatment was proposed owing to an increase in lesion size at angiographic follow-up. A partially thrombosed aneurysm was found during surgery, suggesting that spontaneous resolution of the aneurysm was occurring. Despite initial worsening of neurological symptoms, the patient gradually recovered after rehabilitation.ConclusionsTreatment decisions for spinal aneurysms should be made on a case-by-case basis, the goal being to offer the patient the best option, while avoiding exposure to unnecessary invasive procedures. As spontaneous resolution of a spinal artery aneurysm is unpredictable, our case highlights the importance of performing a perioperative vascular study if surgery is planned.Copyright © 2020 Elsevier Inc. All rights reserved.

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