• Journal of Korean Neurosurgical Society
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• v.29 no.7
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• pp.949-952
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• 2000

The incidence of superior cerebellar artery aneurysm is less than 1% of all intracranial aneurysms. These aneurysms usually occur at the junction between the superior cerebellar artery and the basilar trunk, however, seldom occur distally. We present a extremely rare case of distal superior cerebellar artery aneurysm arising at the junction between anterior pontine segment and ambient segment.

• Journal of Korean Neurosurgical Society
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• v.56 no.3
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• pp.257-260
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• 2014

The etiologies of intracranial artery dissection are various, the exogenous as well as inherited connective tissue disorders. We report on a patient who presented with diffuse subarachnoid hemorrhage who had been suffered from essential thrombocythemia. He was diagnosed to multiple dissecting aneurysms of left superior cerebellar artery, left posterior inferior cerebellar artery and right pericallosal artery and treated with endovascular coil embolization.

• Journal of Korean Neurosurgical Society
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• v.45 no.1
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• pp.11-15
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• 2009

Objective : The aim of study was to review our patient population to determine whether there is a critical aneurysm size at which the incidence of rupture increases and whether there is a correlation between aneurysm size and location. Methods : We reviewed charts and radiological findings (computed tomography (CT) scans, angiograms, CT angiography, magnetic resonance angiography) for all patients operated on for intracranial aneurysms in our hospital between September 2002 and May 2004. Of the 336 aneurysms that were reviewed, measurements were obtained from angiograms for 239 ruptured aneurysms by a neuroradiologist at the time of diagnosis in our hospital. Results : There were 115 male and 221 female patients assessed in this study. The locations of aneurysms were the middle cerebral artery (MCA, 61), anterior communicating artery (ACoA, 66), posterior communicating artery (PCoA, 52), the top of the basilar artery (15), internal carotid artery (ICA) including the cavernous portion (13), anterior choroidal artery (AChA, 7), A1 segment of the anterior cerebral artery (3), A2 segment of the anterior cerebral artery (11), posterior inferior cerebellar artery (PICA, 8), superior cerebellar artery (SCA, 2), P2 segment of the posterior cerebral artery (1), and the vertebral artery (2). The mean diameter of aneurysms was $5.47{\pm}2.536\;mm$ in anterior cerebral artery (ACA), $6.84{\pm}3.941\;mm$ in ICA, $7.09{\pm}3.652\;mm$ in MCA and $6.21{\pm}3.697\;mm$ in vertebrobasilar artery. The ACA aneurysms were smaller than the MCA aneurysms. Aneurysms less than 6 mm in diameter included 37 (60.65%) in patients with aneurysms in the MCA, 43 (65.15%) in patients with aneurysms in the ACoA and 29 (55.76%) in patients with aneurysms in the PCoA. Conclusion : Ruptured aneurysms in the ACA were smaller than those in the MCA. The most prevalent aneurysm size was 3-6 mm in the MCA (55.73%), 3-6 mm in the ACoA (57.57%) and 4-6 mm in the PCoA (42.30%). The more prevalent size of the aneurysm to treat may differ in accordance with the location of the aneurysm.

• Journal of Korean Neurosurgical Society
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• v.49 no.6
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• pp.329-333
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• 2011

Objective : As medical advances have increased life expectancy, it has become imperative to develop specific treatment strategies for intracranial aneurysms in the elderly. We therefore analyzed the clinical characteristics and outcomes of the treatment of unruptured intracranial aneurysms in patients older than 70 years. Methods : We retrospectively reviewed the medical records and results of neuroimaging modalities on 54 aneurysms of 48 consecutive patients with un ruptured intracranial aneurysms. ($mean{\pm}SD$ age, $72.11{\pm}1.96$ years; range, 70-78 years) who underwent surgical clipping over 10 years (May 1999 to June 2010). Results : Of the 54 aneurysms, 22 were located in the internal carotid artery, 19 in the middle cerebral artery, 12 in the anterior cerebral artery, and 1 in the superior cerebellar artery. Six patients had multiple aneurysms. Aneurysm size ranged from 3 mm to 17 mm ($mean{\pm}SD$, $6.82{\pm}3.07$ mm). Fifty of the 54 aneurysms (92.6%) were completely clipped. Three-month outcomes were excellent in 50 (92.6%) aneurysms and good and poor in 2 each (3.7%), with 1 death (2.0%). Procedure-related complications occurred in 7 aneurysms (13.0%), with 2 (3.7%) resulting in permanent neurological deficits, including death. No postoperative subarachnoid hemorrhage occurred during follow-up. The cumulative rates of stroke- or death-free survival at 5 and 10 years were 100% and 78%, respectively. Conclusion : Surgical clipping of unruptured intracranial aneurysms in elderly group could get it as a favorable outcome in well selected cases.