Related Experiment Videos
Spontaneous total thrombosis of distal superior cerebellar artery aneurysm
1Department of Neurosurgery, National Cardiovascular Center, Suita, Osaka, Japan.
Insights
This study details a rare case of a completely self-clotted aneurysm in the superior cerebellar artery (SCA). This spontaneous thrombosis of a distal SCA aneurysm was confirmed via imaging and follow-up angiography.
Area of Science:
- Neurology
- Vascular Surgery
- Radiology
Background:
- Cerebral aneurysms, particularly those in the superior cerebellar artery (SCA), pose significant clinical challenges.
- Distal SCA aneurysms are less common and present unique diagnostic and therapeutic considerations.
Observation:
- A patient presented with transient cerebellar ataxia, with initial angiography revealing multiple aneurysms.
- Imaging confirmed a thrombosed mass in the right cerebellar peduncle, corresponding to the distal SCA aneurysm.
- No filling of the right SCA was observed on angiography from its origin.
Findings:
- Complete spontaneous thrombosis of a non-giant distal superior cerebellar artery aneurysm is reported.
- Follow-up angiography demonstrated no recanalization of the thrombosed SCA aneurysm 9 months post-procedure.
- This represents the first reported case of a total spontaneously thrombosed non-giant distal SCA aneurysm.
Implications:
- This case expands the understanding of cerebral aneurysm behavior and natural history.
- It highlights the potential for spontaneous resolution in select cases of distal SCA aneurysms.
- Further research may elucidate the mechanisms and predictors of spontaneous thrombosis in cerebral aneurysms.
Abstract:
We report the case of an aneurysm of the distal segment of the superior cerebellar artery (SCA) which showed complete spontaneous thrombosis. Initial angiography performed in another institution showed 3 non-ruptured aneurysms located on the right distal SCA, C3 segment of the right internal carotid artery (ICA) and left basilar artery (BA)-SCA bifurcation. The patient had two episodes of transient cerebellar ataxia of the right hand before admission to our hospital, but no neurological signs were noted on admission. Computed tomography (CT) and magnetic resonance image (MRI) showed a thrombosed mass on the right cerebellar peduncle, and angiography showed no filling of the right SCA from its origin. A follow up angiogram 9 month after endovascular surgery for other aneurysms showed no recanalization of SCA or the aneurysms. There are no previous reports of total spontaneously thrombosed non-giant aneurysms of the distal segment of the SCA.