Serial Magnetic Resonance Imaging of Acute Spontaneous Thrombosis of a Giant Intracranial Aneurysm —Case Report—
Open Access
- 1 January 1998
- journal article
- case report
- Published by Japan Neurosurgical Society in Neurologia medico-chirurgica
- Vol. 38 (9) , 562-565
- https://doi.org/10.2176/nmc.38.562
Abstract
A 46-year-old female presented with decreased bilateral visual acuity due to an unruptured non-thrombosed giant aneurysm arising from the left internal carotid artery. After admission, acute thrombosis of the aneurysm occurred spontaneously. Her consciousness and visual acuity temporarily worsened. Serial T2-weighted magnetic resonance (MR) imaging showed the size of the low intensity area near the orifice increased, and the aneurysm ruptured thereafter. Trapping of the aneurysm with a high-flow bypass was performed. Serial MR imaging findings clearly demonstrated the intraluminal structure of the thrombosed giant aneurysm. The aneurysm grew in size after thrombosis. The enlarging signal-void area on T2-weighted MR images were indicative of aneurysmal rupture. MR imaging is quite helpful to evaluate the changes of intraluminal thrombosis and size in giant aneurysms.Keywords
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