• Journal of Korean Neurosurgical Society
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• v.40 no.1
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• pp.31-34
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• 2006

This 58-year-old woman was transferred from a local hospital due to symptoms of acute headache and decreased consciousness. Computed tomography revealed a subarachnoid hemorrhage with blood clot in prepontine cistern. On the first day in the hospital, diagnostic cerebral angiography revealed a basilar tip aneurysm. We performed basilar artery to bilateral posterior cerebral artery[PCA] stent placement to reconstruct the basilar artery apex.

• Journal of Cerebrovascular and Endovascular Neurosurgery
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• v.25 no.1
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• pp.81-86
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• 2023

Basilar artery (BA) perforator aneurysms are exceedingly rare causes of subarachnoid hemorrhage. Therefore, the natural history and optimal treatment have not been established, and surgical, endovascular, and conservative management have been used. However, there is no consensus on the optimal treatment strategy. Herein, we report the case of a 52-year-old man presenting with a ruptured BA perforator aneurysm. First, we deployed an Enterprise stent from the left P1 segment to the BA because the microcatheter could not enter the aneurysm. Then, we deployed a helical coil on the orifice of the BA perforator. Finally, we deployed another Enterprise stent, sandwiching the helical coil between the two Enterprise stents. The aneurysm was completely obliterated without recurrence on the follow-up angiography. Our technique of sandwiching the small helical coil between two Enterprise stents might help other surgeons by offering another feasible treatment option for ruptured BA perforator aneurysms.

• Journal of Korean Neurosurgical Society
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• v.53 no.4
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• pp.235-240
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• 2013

Fusiform aneurysms on the basilar artery (BA) trunk are rare. The microsurgical management of these aneurysms is difficult because of their deep location, dense collection of vital cranial nerves, and perforating arteries to the brain stem. Endovascular treatment is relatively easier and safer compared with microsurgical treatment. Selective occlusion of the aneurysmal sac with preservation of the parent artery is the endovascular treatment of choice. But, some cases, particularly giant or fusiform aneurysms, are unsuitable for selective sac occlusion. Therefore, endovascular coiling of the aneurysm with parent vessel occlusion is an alternative treatment option. In this situation, it is important to determine whether a patient can tolerate parent vessel occlusion without developing neurological deficits. We report a rare case of fusiform aneurysms in the BA trunk. An 18-year-old female suffered a headache for 2 weeks. Computed tomography and magnetic resonance image revealed a fusiform aneurysm of the lower basilar artery trunk. Digital subtraction angiography revealed a $7.1{\times}11.0$ mm-sized fusiform aneurysm located between vertebrovasilar junction and the anterior inferior cerebellar arteries. We had good clinical result using endovascular coiling of unruptured fusiform aneurysm on the lower BA trunk with parent vessel occlusion after confirming the tolerance of the patient by balloon test occlusion with induced hypotension and accompanied by neurophysiologic monitoring, transcranial Doppler and single photon emission computed tomography. In this study, we discuss the importance of preoperative meticulous studies for avoidance of delayed neurological deficit in the patient with fusiform aneurysm on lower basilar trunk.

• Journal of Korean Neurosurgical Society
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• v.30 no.6
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• pp.769-773
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• 2001

Moyamoya disease is defined as the development of collateral pathways, associated with bilateral chronic progressive stenosis of the carotid fork. Persistent trigeminal artery is the vessel most frequently observed to persist into adult life among persistent carotid-basilar and carotid-vertebral anastomotic vessels. The authors present a man who had a sudden, severe headache and brain CT showed subarachnoid hemorrhage in left interpeduncular and prepontine cistern. Four-vessel angiogram revealed moyamoya disease associated with aneurysm arising from the junction of persistent trigeminal artery aneurysm and basilar artery. As a treatment, coil embolization was tried but it was failed because of anatomical difficulty of aneurysm. The aneurysm was successfully treated with clipping surgery 10 days later. To our knowledge, this is the first case being reported.

• Journal of Korean Neurosurgical Society
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• v.30 no.sup1
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• pp.128-132
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• 2001

Aneurysm of the basilar artery trunk are rare and the surgical approach is very difficult because of the complexity of surgical anatomy around the basilar trunk and the vulnerable adjacent neurovascular structures. The development of brain CT and MRI makes the accurate diagnosis and produces the improvement of surgical approaches at the lesion of the skull base. One of the surgical approaches of basilar trunk aneurysms, the retrolabyrinthine presigmoid transtentorial transpetrosal approach to the aneurysm of the basilar trunk has some advantages of minimal retraction of cerebellum and temporal lobe, intact auditory and facial nerve function by the preservation of the vestibulocochlear and facial nerves, a preservation of sigmoid sinus and vein of Labbe and a relatively good operation field. We had a good result with this approach for the patient of basilar trunk aneurysm and reported the case with the review of literatures.

• 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.45 no.4
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• pp.236-239
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• 2009

Carotid occlusion is an inevitable therapeutic modality for the treatment of complex aneurysms such as giant, traumatic, and intracavernous aneurysms. Late complications of carotid occlusion include 'de novo' aneurysm formation at a distant site because of hemodynamic changes in the circle of Willis. We report a case of de novo aneurysm in a vessel that appeared to be normal on initial angiography. The patient developed an anterior communicating artery aneurysm and marked growth of a basilar bifurcation aneurysm 9 years after trapping of the left internal carotid artery for the treatment of a ruptured large saccular aneurysm involving ophthalmic and cavernous segments. We propose that patients who undergo therapeutic carotid occlusion should be periodically followed by magnetic resonance angiography or computed tomographic angiography to evaluate the possibility of de novo aneurysm formation; this advice is in line with previous reports.

• Journal of Korean Neurosurgical Society
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• v.45 no.4
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• pp.224-230
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• 2009

Objective : We aimed to analyze clinical and radiological outcomes retrospectively in patients with basilar apex aneurysms treated by coiling or clipping. Methods : Outcomes of basilar bifurcation aneurysms were assessed retrospectively in 77 consecutive patients (61 women, 16 men), ranging in age from 25 to 79 years (mean, 53.7 years) from 1999 to 2007. Results : Forty-nine patients out of 77 patients (63.6%) presented with subarachnoid hemorrhages of the 49 patients treated with coiling, 27 (55.1 %) showed complete occlusion of the aneurysm sac. Of these, 13 patients (26.5%) developed coil compaction on angiographic or MRI follow-up, with recoiling required in 9 patients (18.4%). Procedural complications of coiling were acute infarction in nine patients and the bleeding of the aneurysms in six patients. The remaining 28 patients underwent microsurgery : twenty-six of these (92.9%) with microsurgery followed up with conventional angiography. Complete occlusion of the aneurysm sac was achieved in 19 patients (73.1%). Operation-related complications of microsurgery were thalamoperforating artery injuries in three patients, retraction venous injury in two, postoperative epidural hemorrhage (EDH) in one, and transient partial or complete occulomotor palsy in 14 patients. Glasgow Outcome Scores (GOS) were 4 or 5 in 21 of 28 (75%) patients treated with microsurgery at discharge, and at 6 month follow-up, 20 of 28 (70.9%) maintained the same GOS. In comparison, GOS of four or 5 was observed in 36 of 49 (73.5%) patients treated with coiling at discharge and at 6 month follow-up, 33 of 49 patients (67.3%) maintained the GOS from discharge. Conclusion : Basilar top aneurysms were still challenging lesions based on our series. Endovascular or microsurgery endowed with its inborn risks and procedural complications for the treatment of basilar apex aneurysms individually. Microsurgery provided better outcome in some specific basilar apex aneurysms. For reaching the most favorable outcome, endovascular modality as well as microsurgery was inevitably considered for each specific basilar apex aneurysm.

• Journal of Korean Neurosurgical Society
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• v.46 no.6
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• pp.545-551
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• 2009

Objective : Complex aneurysms such as fusiform and very small aneurysms (< 3 mm) are challenging in neurovascular and endovascular surgery. Author reports follow-up results of 9 cases treated by sole stent technique with pertinent literature review. Methods : A retrospective study was made of 9 patients who were treated by sole stenting technique for cerebral aneurysm between January 2003 and January 2009. Two of them had fusiform aneurysm, 5 had very small aneurysm, and 2 had small saccular aneurysm. Five patients had ruptured aneurysms and four had unruptured aneurysms. Seven aneurysms were located in the internal carotid artery (ICA), 1 in the middle cerebral artery (MCA) and 1 in the basilar artery. Follow-up cerebral angiography was performed at post-procedure 3 months, 6 months, and 12 months. Mean follow-up period is 30 months (ranged from 3 days to 30 months). Results : Aneurysm size was decreased in 6 of 9 cases on follow-up images and was not changed in 3 cases. Although total occlusion was not seen, patients had stable neurological condition and angiographic result. The procedural complication occurred in 2 cases. One was coil migration and the other was suboptimal deployment of stent, and both were asymptomatic. Re-bleeding and thromboembolic complication had not been occurred. Conclusion : Sole stenting technique is relatively effective and safe as an alternative treatment for fusiform and very small aneurysms.

• Journal of Korean Neurosurgical Society
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• v.40 no.4
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• pp.239-244
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• 2006

Objective : The present study evaluated overall surgical results for 3,000 patients with intracranial aneurysms, operated on in Busan Paik Hospital institution. Methods : Three thousand aneurysm cases, operated on in Busan Paik Hospital between January 1980 to June, 15th, 2005, were evaluated based on the following criteria; aneurysm form, aneurysm location, surgical results, postoperative complications, and seasonsonality of occuence. 957 cases were anterior communicating artery aneurysms, 776 were internal carotid artery[ICA] aneurysms, 755 were middle cerebral artery[MCA] aneurysms, 96 were anterior cerebral artery[ACA] aneurysms, 128 were vertebro-basilar artery[VBA] aneurysms and 288 were multiple aneurysms. The male to female ratio was 0.7 to 1 Surgical methods included 2.738 clippings, 219 coating and wrappings, 23 aneurysmoraphies, 20 proximal ligations. Results : Rebleeding occured in 5.1% of the early operation group and 16% of the late operation group respectively. Incidence of clinical vasospasm was 166% and angiographic vasospasm was 24.1%. The percentage of the multiple aneurysms was 9.5%, the percentage of the dissecting aneurysm was 6 cases [0.2%], 6 of the total [0.2%];De Novo" aneurysm, the percentage of lobectomies with clipping cases was 9 cases [03%] the percentage were incidental aneurysms; 164 [5.5%]. 88.1% had overall favorable surgical results with a 5.5 % mortality rate. Calcium-channel blocker and "Triple H" therapy did not improve mortality but did significantly improve morbidity. In the old age group, early operation reduced vasospasm, rebleeding and medical complications. The early surgery group exhibited a 86.2% favorable outcome with a 8.1% mortality rate. Intraoperative angiography reduced residual or remained aneurysms in large, giant aneurysm, especially in A.com artery aneurysm. Conclusion : The surgical results for the early surgery group according to surgical timming was better, but there were not statistically significant. ntraoperative angiography was especially useful on large aneurysms of the anterior communicating artery.