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 16.6% 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 (0.3%), 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.
Aneurysm ; Aneurysm, Dissecting ; Angiography ; Arteries ; Busan ; Female ; Humans ; Incidence ; Intracranial Aneurysm ; Ligation ; Male ; Mortality ; Postoperative Complications

Adult ; Arachnoid Cysts ; complications ; Female ; Humans ; Intracranial Aneurysm ; etiology

OBJECTIVE: The purposes of this study were to introduce a superficial temporal artery (STA)-sparing mini-pterional approach for the treatment of cerebral aneurysms and review the surgical results of this approach. METHODS: Between June 2010 and December 2015, we performed the STA-sparing mini-pterional approach for 117 patients with 141 unruptured intracranial aneurysms. We analyzed demographic, radiologic, and clinical variables including age, sex, craniotomy size, aneurysm location, height of STA bifurcation, and postoperative complications. RESULTS: The mean age of patients was 58.4 years. The height of STA bifurcation from the superior border of the zygomatic arch was 20.5 mm±10.0 (standard deviation [SD]). The craniotomy size was 1051.6 mm²±206.5 (SD). Aneurysm neck clipping was possible in all cases. Intradural anterior clinoidectomy was performed in four cases. Contralateral approaches to aneurysms were adopted for four cases. Surgery-related complications occurred in two cases. Permanent morbidity occurred in one case. CONCLUSION: Our STA-sparing mini-pterional approach for surgical treatment of cerebral aneurysms is easy to learn and has the advantages of small incision, STA sparing, and a relatively wide surgical field. It may be a good alternative to the conventional pterional approach for treating cerebral aneurysms.
Aneurysm ; Craniotomy ; Humans ; Intracranial Aneurysm* ; Neck ; Postoperative Complications ; Temporal Arteries ; Zygoma

OBJECTIVE: Aneurysms are very rarely encountered in the distal posterior inferior cerebellar artery (PICA). The authors experienced 5 cases with a distal PICA aneurysm among 368 cases of intracranial aneurysms during the period from January 2003 to January 2008. Here, the authors describe their clinical and surgical experiences and include a review of the relevant literature. METHODS: Using radiologic findings and charts, we retrospectively reviewed the surgical results of 5 cases with a distal PICA aneurysm treated from January 2003 to January 2008. RESULTS: The current five cases were composed of four cases of 'Good' and one case of 'Fair'. No postoperative complications occurred other than a ventriculo-peritoneal shunt due to hydrocephalus in Case 2. In all five cases, treatment was successful without neurological deficit. CONCLUSION: Surgical outcome of PICA aneurysms have been reported to be excellent because the amount of intraparenchymal injury is limited. More clinical experience, microsurgical technique developments, and endovascular surgery advancements are certain to improve treatment outcomes.
Aneurysm ; Arteries ; Hydrocephalus ; Intracranial Aneurysm ; Pica ; Postoperative Complications ; Retrospective Studies ; Subarachnoid Hemorrhage ; Ventriculoperitoneal Shunt

OBJECTIVE: Conventional pterional approach is a commonly used neurosurgical technique for the treatment of cerebral aneurysms. However, this technique requires more extensive brain exposure than other key hole approaches and is sometimes associated with surgical traumatization or cosmetic problems. The aim of this study was to compare the postoperative outcome between pterional and supraorbital keyhole approaches in the patients with anterior circulation aneurysms. METHODS: The authors reviewed patients with anterior circulation aneurysms who underwent aneurysm clipping via pterional or supraorbital keyhole approach at a single institute over a period of 2 years. Ninety-eight patients harboring 108 aneurysms were included in this study. Various outcomes were recorded, which included clinical grade, cosmetic problems, patients' satisfaction and complications such as chewing discomfort, frontal muscle weakness, hyposmia, infection. RESULTS: The supraorbital approach exhibited a shorter operation time compared with the pterional approach. Complications such as chewing discomfort occurred less frequently in the supraorbital approach group. Moreover, the cosmetic outcome was significantly better in the supraorbital group than in the pterional group. CONCLUSION: The supraorbital keyhole approach reduced intra- and postoperative complications, including chewing discomfort and cosmetic disturbances, compared with the conventional pterional approach.
Aneurysm ; Brain ; Cosmetics ; Humans ; Intracranial Aneurysm ; Mastication ; Muscle Weakness ; Postoperative Complications

It became possible for a beginner of aneurysm surgery to shorten the stabilization period of surgical technique recently with several advances in the management of subarachnoid hemorrhage, such as early surgery, aggressive critical care, anesthetic technique, calcium channel blockers, and hypervolemia. The present study was conducted to determine whether surgical outcome actually changed over the years and what factors contributed to these changes. 219 good grade(Hunt-Hess grade I to III) patients with ruptured intracranial aneurysms operated by the same operator within 3 days after the attack from 190 to 995 were selected to reduce selection bias. All possible clinical and radiological factors for surgical outcome were analyzed to find significant factors, and then distributions of each significant factors were examined between 2 treatment periods(1990 to 1993 vs 1994 to 1995). Surgical outcome began to improve significantly since 1994(1990-93 vs 1994-95, p<0.005):75.0%(12/16) in 1990, 80.8%(21/26) in 1991, 77.4%(24/31) in 1992, 78.4%(40/51) in 1993, 87.8%(36/41) in 1994, 96.3%(52/54) in 1995 experienced good outcome. The decrease of postoperative surgical complications was the only factor influencing an increase of good outcome between 2 treatment periods. The distribution and characteristics of other possible biological significant factors for outcome were not different statistically. Improvement of surgery outcome by a vascular neurosurgeon depends on the number of experienced cases, and case qualities such as distributions of aneurysm size, location, and clinical grade etc. These results suggest that surgical technique importantly affects the change of surgical outcome, and consequently, considering usual level of surgical technique, more careful approach with assistance of an experienced vascular neurosurgeon than surgery by oneself will be necessary for first 4 to 5 years of aneurysm surgery.
Aneurysm* ; Calcium Channel Blockers ; Critical Care ; Humans ; Intracranial Aneurysm ; Postoperative Complications ; Selection Bias ; Subarachnoid Hemorrhage

To evaluate the risk of definitive intracranial microsurgical aneurysm obliteration as a function of the timing of the operative intervention, we retrospectively reviewed 167 consecutive patients in the department of Neurosurgery of Busan Paik's Hospital, Inje medical college, from January 1980 to December 1983. The patients who were operated upon within the first 3 days of their most recent subarachnoid hemorrhage formed the early group;the patients operated upon after the 3 days were considered to have undergone the late surgery. On the base of their clinical outcome the patients were allocated to one of five outcome categories(excellent, good, fair, poor, death) both at the time of their hospital discharge and at their most recent clinical revaluation. The 83% favorable outcome estimated from early operation and 72% from late operation. The mortality was estimated 5% from early operation and estimated 11% from late operation. The optimal timing of surgery for ruptured intracranial aneurysms is currently unknown, but early operation is an effective and reliable method to reduce the occurrence of rebleeding, vasospasm, ischemic complication and medical complication etc. Recently, there has been a resurgence of interest in early operation and increasing numbers of surgeons have been adopting this modality, but prompt, accuate diagnosis and early referral to specialized centers is the only way in which significant advances in reducing the overall morbidity and mortality for majority of patients can be achieved.
Aneurysm ; Aneurysm, Ruptured ; Busan ; Diagnosis ; Humans ; Intracranial Aneurysm* ; Microsurgery ; Mortality ; Neurosurgery ; Postoperative Complications ; Referral and Consultation ; Retrospective Studies ; Subarachnoid Hemorrhage

Administration, Topical ; Female ; Humans ; Intracranial Aneurysm ; complications ; Middle Aged ; Papaverine ; administration & dosage ; Vasospasm, Intracranial ; complications ; drug therapy

Adult ; Heart Atria ; Heart Neoplasms ; complications ; Humans ; Intracranial Aneurysm ; etiology ; Magnetic Resonance Imaging ; Male ; Myxoma ; complications

OBJECTIVE: Distal anterior cerebral artery(DACA) aneurysms are relatively uncommon, and have special aspects. We discuss clinical features and surgical results of DACA aneurysms with review of literatures. METHODS: Among 725 cases of intracranial aneurysms operated from 1989 to 2001 in our hospital, 38 cases of DACA aneurysms were studied retrospectively. The clinical presentations, neurological findings, operative approaches and outcome were analyzed. RESULTS: The incidence of the DACA aneurysm was 5.2% of total 725 aneurysms. Multiple aneurysms were found in 10 patients. Among the 38 patients, 15 were men and 23 were women. The mean age was 49.8 years. 2 aneurysms were located at frontobasal artery, 5 at the origin of frontopolar artery, 28 at the bifurcation between callosomarginal and pericallosal artery, 3 at the origin of pericallosal artery. 32 patients had good outcomes after surgery. 4 patients remained disabled, and 2 patients died. Postoperative complications were vasospasm, cerebral infarction, intracranial hemorrhage, pneumonia. CONCLUSION: The incidence of DACA aneurysm was relatively rare than other location. We think that unilateral interhemispheric approach is useful for aneurysm in most DACA, and approaches should be chosen according to the location of aneurysm and presence or absence of multiple aneurysms. The Glasgow Outcome Scale score was good in patient with low Hunt & Hess grade preoperatively. And early operation can reduce the rate of rebleeding and improve outcome of DACA aneurysms.
Aneurysm ; Anterior Cerebral Artery* ; Arteries ; Cerebral Arteries ; Female ; Glasgow Outcome Scale ; Humans ; Incidence ; Infarction ; Intracranial Aneurysm* ; Intracranial Hemorrhages ; Male ; Pneumonia ; Postoperative Complications ; Retrospective Studies ; Subarachnoid Hemorrhage ; Vasospasm, Intracranial