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Figure:CT angiogram shows a partially thrombosed left MCA bifurcation aneurysm in addition to superior division occlusion (a,b). Another CTA obtained after recurrence and deterioration (six days later) shows complete thrombosis of the aneurysm and MCA main stem distally (c,d). Follow-up CTA obtained 18 days after the first event documents complete recanalization of the aneurysm (9-mm in diameter) (e,f).
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The mechanism of bleb formation in unruptured intracranial aneurysms (UIAs) remains unclear. This study aimed to investigate the association between peri-aneurysmal contact (PAC) and bleb formation. Forty-five aneurysms were classified depending on the presence of blebs and PAC using computed tomographic angiography and magnetic resonance imaging....
Citations
Objective
Cortical subarachnoid hemorrhage (cSAH) can be resulted from by a wide variety of causes. A cSAH probably associated with Behcet's disease is herein reported for the first time.
Case report
A 58-year-old male with stable Behcet's disease evaluated for sudden onset headache. Emergency computed tomography disclosed cSAH in the left frontal sulci. A ruptured middle cerebral artery cortical branch aneurysm was found. Surprisingly, this aneurysm obliterated completely after diagnostic catheter angiography.
Conclusion
This case highlights three important points; First, non-mycotic (non-infectious) distal cerebral artery aneurysms may rarely cause cSAH. Second, distal dissecting aneurysms may rarely become obliterated after diagnostic cerebral angiography. Third, such aneurysms may be one of the long-term consequences of vascular inflammation in Behçet's disease.
