Related Experiment Video
Updated: Aug 7, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
[Intracranial aneurysms presenting with ischemic stroke]
K Warin-Fresse1, E Auffray-Calvier, H Desal
1Service de Neuroradiologie, Hôpital G et R Laënnec, 44093 Nantes cedex.
Purpose:
To report four cases of patient with an acute ischemic event as a presenting symptom of a berry aneurysm.
Patients And Methods:
One male and three female (aged range 38 to 65 years) patients were admitted for acute stroke. The neuroradiologic finding disclosed aneurysm thrombosis, inferior to twenty five millimetres in three cases. Lumbar puncture was done in one case and showed subarachnoid haemorrage.
Discussion:
We will discuss the hypothesis leading to the mechanism of aneurysm thrombosis. Two theories will be presented: "hemodynamic" and "parietal" modifications. We will propose a management protocol for these patients with atypical presentation of intracranial aneurysms given the potential risk of rupture.
Conclusion:
The natural history of intracranial aneurysms is still not fully understood. Nevertheless, aneurym thrombosis may occur and lead to ischemic stroke.
Related Concept Videos
Ischemic Stroke l: Introduction
Hemorrhagic Stroke l: Introduction
Ischemic Stroke ll: Pathophysiology
Transient Ischemic Attack l: Introduction
Hemorrhagic Stroke ll: Pathophysiology
Stroke: Introduction and Types