• Journal of Korean Neurosurgical Society
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• 제38권2호
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• pp.132-135
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• 2005

We report two cases of patients with ruptured vertebral artery dissecting aneurysms that were treated using double overlapping stent placement. Angiography performed immediately after the procedure revealed a significant reduction of aneurysmal filling due to the intraaneurysmal thorombosis. In one case, complete disappearance of the lesion was observed after seven days and in the another one, the size of previous aneurysm sac was decreased on 7th post-procedure day. The reduced stent porosity caused by the overlapping stents, which result in significant hemodynamic changes inside aneurysmal sac, may accelerate intraanuerysmal thromobosis and may be helpful in achieving a more rapid complete occlusion of aneurysm. This double stent method may represent a therapeutic alternatives for dissecting vertebral artery aneurysm in which conventional endovascular techniques or stent supported coil embolization is not considered feasible and surgical treatment is contraindicated.

• The Journal of Advanced Prosthodontics
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• 제4권4호
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• pp.239-242
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• 2012

Overlay complete dentures are simple, reversible and economical treatment modality for patients with congenital or acquired disorders that severely affect the tooth development. It satisfies both the esthetic and functional demands where the extraction of teeth is not generally indicated. In pediatric patients, the overlay dentures establish a relatively stable occlusion that improves patient's tolerance to the future treatment procedures for worn dentition. This clinical report highlights the imperative need of appropriate treatment strategy and application of maxillary and mandibular overlay dentures in a pediatric patient who suffered from congenitally mutilated and worn dentition.

• Journal of Chest Surgery
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• 제5권2호
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• pp.135-140
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• 1972

Papilloma of the upper respiratory tract, particularly larynx and vocal cords are relatively common disease. However, solitary papilloma of the bronchus is extremely rare condition and only a handful cases were reported in the literature. The patient is a 39 year old housewife who has been suffering from productive cough and occasional hemoptysis in the past one year. X-ray of the chest showed complete atelectasis of the right upper lobe. Bronchography revealed a hemispherical protruding mass in the right main bronchus with complete occlusion of the upper lobe bronchus. Bronchoscopy showed a whitish friable mass in the lumen of the right main bronchus biopsy of which was reported as benign papilloma. Right upper lobectomy together with wedge resection of the portion of right main bronchus to include the tumor was done. Cut-edges of the bronchus were stitched together with interrupted fine dacron sutures. During this procedure, right main bronchus was gently clamped with non-crushing Satinsky type clamp. Patient has had uneventful recovery from surgery and was discharged without symptom. Patientis doing well three months following the operation.

• 구강회복응용과학지
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• 제32권2호
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• pp.141-148
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• 2016

Computer-aided technology는 최근 치과 치료의 흐름이다. DENTCA$^{TM}$ CAD/CAM denture (DENTCA Inc.)는 상용화된 computer-aided design/computer-aided manufacturing (CAD/CAM) 의치 시스템 중 하나로, 한 번의 내원을 통해 의치 제작에 필요한 환자의 모든 정보를 획득하여, 이 정보를 컴퓨터에 저장하고 3D 프린팅을 통해 두 번째 내원 시에 의치 장착을 목표로 한다. 현재까지 여러 증례들은 총의치 제작에 대한 CAD/CAM system의 임상적 적용을 시험해 보았다. 본 증례는 두 명의 환자에서 DENTCA system을 이용한 의치와 전통적인 방법을 이용한 의치를 동시에 제작하여 DENTCA system의 효용성과 한계점을 고찰하였다.

• 구강회복응용과학지
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• 제29권4호
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• pp.426-433
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• 2013

완전 무치악 환자를 총의치로 수복할 때 특히 하악의 경우 유지, 지지 면적이 상악보다 좁아 의치의 탈락, 불량한 지지 및 안정성, 통증을 유발하여 의치의 사용이 불편할 수 있다. 이런 환자에서 임플란트를 이용한 보철수복은 심미성, 안정성, 저작력을 향상시킬 수 있다. 반면 상악 완전무치악은 구개를 이용할 수 있으므로 총의치로 수복하였을 때 많은 환자들이 잘 적응하여 사용하고 있다. 이에 상하악 완전 무치악 환자의 치료 옵션으로 하악은 임플란트로 지지를 받는 고정성 보철물 또는 임플란트 오버덴쳐로 수복하고 상악은 연조직에 의해 지지를 받는 전통적인 총의치로 수복하는 전악 보철수복이 제시되었다. 이 때 상악 총의치에 대합하는 하악 임플란트 고정성 보철이 상악 잔존치조제의 골흡수에 어떠한 영향을 미치는지에 대한 문헌고찰과 함께 증례를 보고하고자 한다.

• 대한치과보철학회지
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• 제59권3호
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• pp.350-358
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• 2021

치과치료에 디지털 기술을 접목함으로써 치료 과정을 단순화하고 환자의 불편감을 줄여줄 수 있다. 디지털 기술을 활용한 총의치의 경우 여러 상업적인 시스템들이 나와 있으나 아직 국내에서는 보편적으로 사용되고 있지 않다. 본 증례 보고에서는 단일 환자에서 디지털 및 전통적인 치료 술식으로 제작한 두 쌍의 총의치를 장착한 뒤 이에 대한 환자의 만족도와 유지력, 안정성, 적합도를 비교하였다. 디지털 치료 술식으로 제작한 총의치는 개인화되어 디자인된 밀링된 치아를 이용했기 때문에 이상적 교합을 형성할 수 있었으며, 디지털 치은 디자인을 통해 심미성 또한 확보하여 적절한 기능적, 심미적 임상결과를 보였으나, 전통적 제작 방식에 비해 하악 의치의 유지력이 떨어지는 등의 한계 또한 존재하였기에, 이에 대하여 보고하고자 한다.

• Journal of Korean Neurosurgical Society
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• 제48권4호
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• pp.354-356
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• 2010

Partial thrombosis of giant aneurysms is not uncommon however, complete angiographic occlusion occurs less frequently. In the case of non-giant aneurysms, complete thrombosis and recanalization has been rarely reported. A 31-year-old man presented to the emergency department with sudden bursting headache. Brain computed tomography (CT) revealed diffuse subarachnoid hemorrhage on the left side. Both CT angiography (CTA) and digital subtraction angiography showed suspicion of small left anterior choroidal artery aneurysm. We performed surgical exploration. In the operation field, anterior choroidal artery aneurysm of $2{\times}2\;mm$ with broad neck and friable appearance was observed. Because we could not clip without sacrificing the anterior choroidal artery, we performed wrapping only. Follow up CTA after 7 months demonstrated 4 mm right internal carotid artery bifurcation aneurysm. The patient underwent aneurismal neck clipping. During the operation, $9{\times}13\;mm$ sized thrombosed aneurysm was detected and completely clipped. We initially thought this aneurysm to be a de novo aneurysm however, it was an aneurysm that had recanalized from a completely thrombosed aneurysm. This case report provides an insight into the potential for complete thrombosis and recanalization of non-giant aneurysms.

• Journal of Korean Neurosurgical Society
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• 제54권6호
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• pp.477-483
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• 2013

Objective : Although surgical techniques for clipping paraclinoid aneurysms have evolved significantly in recent times, direct microsurgical clipping of large and giant paraclinoid aneurysms remains a formidable surgical challenge. We review here our surgical experiences in direct surgical clipping of large and giant paraclinoid aneurysms, especially in dealing with anterior clinoidectomy, distal dural ring resection, optic canal unroofing, clipping techniques, and surgical complications. Methods : Between September 2001 and February 2012, we directly obliterated ten large and giant paraclinoid aneurysms. In all cases, tailored orbito-zygomatic craniotomies with extradural and/or intradural clinoidectomy were performed. The efficacy of surgical clipping was evaluated with postoperative digital subtraction angiography and computed tomographic angiography. Results : Of the ten cases reported, five each were of ruptured and unruptured aneurysms. Five aneurysms occurred in the carotid cave, two in the superior hypophyseal artery, two in the intracavernous, and one in the posterior wall. The mean diameter of the aneurysms sac was 18.8 mm in the greatest dimension. All large and giant paraclinoid aneurysms were obliterated with direct neck clipping without bypass. With the exception of the one intracavenous aneurysm, all large and giant paraclinoid aneurysms were occluded completely. Conclusion : The key features of successful surgical clipping of large and giant paraclinoid aneurysms include enhancing exposure of proximal neck of aneurysms, establishing proximal control, and completely obliterating aneurysms with minimal manipulation of the optic nerve. Our results suggest that internal carotid artery reconstruction using multiple fenestrated clips without bypass may potentially achieve complete occlusion of large paraclinoid aneurysms.

• Journal of Korean Neurosurgical Society
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• 제59권3호
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• pp.269-275
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• 2016

Objective : Although middle cerebral artery (MCA) aneurysms are less amenable to coil embolization, an increasing number of studies support favorable endovascular treatment for them. The purpose of this study is to compare the outcomes of two different treatments (surgery versus coiling) and evaluate the benefits of surgical clipping for MCA aneurysms. Methods : Here we retrospectively analyzed the outcomes of 178 ruptured and unruptured MCA aneurysms treated in patients between September 2008 and April 2012. Parameters assessing treatment outcomes include degree of aneurysm occlusion, presence of regrowth, clinical status, and complications. Results : Among 178 MCA aneurysms, 153 were treated surgically. After a mean follow-up of 12 months, the surgery group showed a clinically significant complete occlusion rate (98%) compared with the coiling group (56%) (p<0.001). Follow-up radiologic evaluation showed a higher regrowth rate (four of 16 cases) in the coiling group than in the surgery group (one of 49 cases) (p=0.003). There was no statistically significant difference in favorable clinical outcome rate between the two groups. The procedure-related permanent morbidity and mortality rates were 2% (three of 153 cases) in the surgery group and 0% (0 of 25 cases) in the coiling group. Conclusion : Compared to endovascular treatment, surgical neck clipping for both ruptured and unruptured MCA aneurysms results in a significantly higher complete obliteration rate and less regrowth. Therefore, even in this endovascular era, we still recommend surgical clipping as the primary treatment option for MCA aneurysms rather than coil embolization.

• Journal of Korean Neurosurgical Society
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• 제45권1호
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• pp.5-10
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• 2009

Objective : Direct surgical clipping of paraclinoid aneurysms poses technical challenges to even very experienced neurosurgeons, making endovascular treatment an alternative treatment modality in many centers. We have therefore retrospectively evaluated the safety and efficacy of endovascular detachable coil embolization of paraclinoid aneurysms. Methods : From June 1997 to June 2007, 65 patients underwent endovascular detachable coiling for 67 paraclinoid aneurysms (of which 9 were ruptured and 58 were unruptured) in our institute. Their medical records, radiological images and readings, and operation records were reviewed retrospectively. Results : After the initial embolization procedure, complete occlusion was achieved in 29 (43.3%) of the aneurysms treated by endovascular detachable coiling. Six aneurysms required retreatment, with two each requiring one, two, or three additional endovascular procedures. Fifty-five (82.1%) aneurysms were measured by three-dimensional time of flight (TOF) magnetic resonance images (MRI) or transfemoral cerebral angiography (TFCA) at a mean follow-up of 29.7 months (range from 4 to 94 months), with 39 aneurysms (70.9%) showing complete occlusion. Thromboembolic events (3.8%) were the most frequent complication. Rupture did not occur during or after any of the procedures. According to the Glasgow Outcome Scale (GOS), 98.4% of the patients treated by coil embolization had a score of 4 or 5. Conclusion : Our results indicate that endovascular detachable coiling is a safe and effective treatment modality in paraclinoid aneurysms.