A Rare Case of Right Internal Carotid Artery Agenesis Complicated by Fusiform Basilar Aneurysm Leading to Subarachnoid and Parenchymal Haemorrhage with Intra-Ventricular Extension
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Date
2025-02
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Akshantala Enterprises Private Limited
Abstract
ICA (Internal Carotid Artery) agenesis is a rare vascular anomaly, often associated with compensatory collateral circulation and predisposition to aneurysm formation. We report the case of a 60-year-old female presenting with acute SAH (Subarachnoid Haemorrhage), intraparenchymal haemorrhage, and intraventricular extension, secondary to ruptured aneurysms. Imaging revealed right ICA agenesis, a fusiform basilar aneurysm, and a saccular aneurysm in the left anterior cerebral artery. Endovascular coiling successfully stabilized the patient. This case highlights the importance of multimodal imaging and early intervention in managing rare cerebrovascular anomalies. ICA agenesis is an exceedingly rare congenital vascular anomaly with a prevalence of <0.01%.[1] It is often asymptomatic but can lead to significant cerebrovascular complications due to altered hemodynamics and compensatory collateral circulation. We report a rare case of right ICA agenesis complicated by ruptured aneurysms, emphasizing the role of advanced imaging modalities in diagnosis and management.
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Borah Pronami, Dharavath Venkatesh, Deka Angshumi, Majumdar Debarati, LS Muhammed Shameem . A Rare Case of Right Internal Carotid Artery Agenesis Complicated by Fusiform Basilar Aneurysm Leading to Subarachnoid and Parenchymal Haemorrhage with Intra-Ventricular Extension . Journal of Evolution of Medical and Dental Sciences. 2025 Feb; 14(1): 6-9