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Updated: May 13, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
[Ruptured cerebral artery blister aneurysm].
Pedro Vega Valdés1, Eduardo Murias Quintana, Angela Meilán Martínez
1Neurorradiología Intervencionista, Hospital Universitario Central de Asturias, Oviedo, España.
Treatment of ruptured blister-like aneurysms is challenging. A novel approach using a conventional stent and micro coils successfully treated a young patient, preventing rebleeding and aneurysm regrowth.
Area of Science:
- Neurosurgery
- Interventional Neuroradiology
- Cerebrovascular Disease
Background:
- Blister-like aneurysms are rare, challenging cerebrovascular lesions characterized by fragile walls and absence of a defined neck.
- Subarachnoid hemorrhage secondary to ruptured blister-like aneurysms requires prompt and effective treatment strategies.
Observation:
- A young patient presented with subarachnoid hemorrhage due to a ruptured blister-like aneurysm.
- Initial treatment planning involved a flow-diverter stent, but a 10-day angiogram showed significant morphological changes in the aneurysm.
Findings:
- A modified endovascular approach was employed, utilizing a conventional stent combined with targeted micro coil embolization at the rupture site.
- This strategy achieved favorable anatomical results and immediate cessation of hemorrhage.
Implications:
- This case demonstrates the successful application of a hybrid endovascular technique for managing complex blister-like aneurysms.
- The findings suggest that conventional stents and micro coils can be a viable alternative when flow diverters are unsuitable or fail.
- Long-term follow-up confirmed the durability of the treatment, with no observed aneurysm regrowth at 6 months.
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