• Tuberculosis and Respiratory Diseases
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• 제76권6호
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• pp.292-294
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• 2014

Primary tracheal amyloidosis (PTA) can lead to airway obstructions, and patients with severe PTA should undergo bronchoscopic interventions in order to maintain airway patency. Focal airway involvements with amyloidosis can only be treated with mechanical dilatation. However, the PTA with diffused airway involvements and concomitant cartilage destructions requires stent placement. Limited information regarding the usefulness of silicone stents in patients with PTA has been released. Therefore, we report a case of diffused PTA with tracheomalacia causing severe cartilage destruction, which is being successfully managed with bronchoscopic interventions and silicone stent placements.

• 대한기관식도과학회지
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• 제14권1호
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• pp.8-13
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• 2008

Malignant esophagorespiratory fistula is a devastating and life-threatening complication of esophageal and bronchogenic carcinomas. As a non-surgical treatment, peroral stent placement into the esophagus or airway can close-off the fistula and prevent progression of the pneumonia. Although reopening of the fistula is not uncommon despite stent placement, interventional treatment is effective for sealing off reopened ERFs. Bronchopleural fistula is a well-recognized complication of pneumonectomy. There have been several reports to occlude the fistula with use of stents and much more experience is required.

• 한국임상수의학회지
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• 제39권2호
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• pp.87-92
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• 2022

A 14-year-old castrated male Persian cat presented with a 2-week history of respiratory difficulty. On physical examination, the patient showed intermittent open-mouth breathing and thoracic auscultation revealed wheezing. Thoracic radiographs revealed a narrowed upper airway and pulmonary infiltration. Computed tomography detected a mass occluding the lumen of the trachea at the level of the entrance to the thorax, a mass causing right main bronchus stenosis, and a nodule on the right caudal lung lobe. Bronchoalveolar lavage cytology tentatively diagnosed a carcinoma. Tracheal mass resection was performed through tracheostomy. Histopathology confirmed the presence of tracheobronchial carcinoma. The survival time after diagnosis was 10 months, during which time the cat underwent tracheostomy, debulking by endotracheal tube, and tracheal stent placement procedures in combination with toceranib phosphate adjuvant chemotherapy.

• Journal of Korean Neurosurgical Society
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• 제40권1호
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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 Korean Neurosurgical Society
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• 제62권1호
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• pp.27-34
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• 2019

Objective : Stent-assisted coil embolization of intracranial wide-necked aneurysm requires long-term postoperative antiplatelet therapy to prevent in-stent thrombosis. This study aimed to demonstrate results of temporary stent placement for coiling wide necked small intracranial aneurysms, which eliminated need for antiplatelet agents, and to discuss its feasibility and safety. Methods : Data of 156 patients who underwent stent-assisted coil embolization between 2011 and 2014 were retrospectively analyzed. Thirteen cases of temporary stent-assisted coil embolization were included, and their clinical and radiological results were evaluated. Results : The aneurysms treated were all unruptured except one case. All of them had wide neck with mean dome-to-neck ratio of 0.96 and were small-sized aneurysms with mean maximal diameter of 4.2 mm. There was no technical failure in retrieval of stent after completion of embolization of the target aneurysm. Immediate angiography revealed 11 complete and two partial embolization (one residual neck and one residual aneurysm). Two cases encountered thrombosis complication, and they were managed without neurological sequelae. The mean follow-up period was 43 months, angiographic follow-up revealed two cases with minor recurrence, and clinical outcome was good with modified Rankin scale score of 0. Conclusion : Temporary stent-assisted coil embolization of small wide-necked intracranial aneurysm using fully retrievable stent appears safe and effective. Further application and evaluation of this technique in more cases with larger size aneurysm is warranted.

• Korean Journal of Radiology
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• 제2권4호
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• pp.204-209
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• 2001

Objective: To determine the feasibility of transcaval transjugular intrahepatic portosystemic shunt (TIPS) in patients with occluded previous TIPS. Materials and Methods: Between February 1996 and December 2000 we performed five transcaval TIPS procedures in four patients with recurrent gastric cardiac variceal bleeding. All four had occluded TIPS, which was between the hepatic and portal vein. The interval between initial TIPS placement and revisional procedures with transcaval TIPS varied between three and 31 months; one patient underwent transcaval TIPS twice, with a 31-month interval. After revision of the occluded shunt failed, direct cavoportal puncture at the retrohepatic segment of the IVC was attempted. Results: Transcaval TIPS placement was technically successful in all cases. In three, tractography revealed slight leakage of contrast materials into hepatic subcapsular or subdiaphragmatic pericaval space. There was no evidence of propagation of extravasated contrast materials through the retroperitoneal space or spillage into the peritoneal space. After the tract was dilated by a bare stent, no patient experienced trans-stent bleeding and no serious procedure-related complications occurred. After successful shunt creation, variceal bleeding ceased in all patients. Conclusion: Transcaval TIPS placement is an effective and safe alternative treatment in patients with occluded previous TIPS and no hepatic veins suitable for new TIPS.

• Journal of Hospice and Palliative Care
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• 제12권2호
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• pp.49-55
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• 2009

상부 위장관 스텐트 삽입술은 근치적 수술이 불가능한 상부 악성 종양에 의한 상부 위장관 협착 환자의 폐쇄 증상 완화를 위한 보존적 치료로서 확립되었으며 내시경 개발 기술이 발달하고 임상 경험이 축적됨에 따라서 여러 상부 위장관 질환에서 스텐트 삽입술을 보다 편리하고 안전하게 시행할 수 있게 되었다. 그러나 스텐트 삽입술 이후에는 동통, 출혈, 천공과 같은 조기 합병증이나 스텐트 일탈, 스텐트 폐쇄 등의 후기 합병증이 발생할 수 있으므로 사후 관리 또한 중요하다.

• 대한영상의학회지
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• 제84권1호
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• pp.197-211
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• 2023

목적 기능장애 혈액투석 접근로에서 나이티놀 비피복형 스텐트 설치 후 접근로 유형과 스텐트의 위치에 따른 개통성을 평가하고자 한다. 대상과 방법 2017년 1월과 2019년 12월 사이에 159명의 환자(평균 연령, 64.1 ± 13.2세)가 혈액투석 접근로 기능장애를 치료를 위해 나이티놀 스텐트를 설치하였다. 스텐트의 위치는 다음과 같다; 18개 팔머리 정맥, 51개 노쪽피부정맥궁, 40개 위팔 정맥, 10개 문합부위 인접 정맥, 7개 동정맥 문합부 및 33개 인조혈관-정맥 문합부. 12개월 개통률은 카플란-마이어 방법과 콕스 회귀 모델로 평가하였다. 결과 총 159개의 스텐트가 103개의 자가동정맥루와 56개의 인조혈관접근로에 성공적으로 설치되었다. 인조혈관접근로는 자가동정맥루에 비해 12개월 일차 및 이차 개통률이 더 낮았다(일차 개통률; 25.0%대 44.7%; p = 0.005, 이차 개통률; 76.8%대 92.2%; p = 0.014). 스텐트 설치 후 노쪽피부정맥궁 및 인조혈관-정맥 문합부에서 다른 부위에 비해 12개월 일차 개통성이 불량하였다. 결론 나이티놀 비피복형 스텐트 설치 후 자가동정맥루는 인조혈관접근로와 비교하여 더 좋은 12개월 일차 및 이차 개통률을 보인다. 노쪽피부정맥궁 및 인조혈관-정맥 문합부의 스텐트는 다른 위치의 스텐트에 비해 더 낮은 12개월 일차 개통률을 보인다.

• Journal of Korean Neurosurgical Society
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• 제65권4호
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• pp.523-530
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• 2022

Objective : To evaluate the safety and efficacy of an overlapped stenting-assisted coiling technique in treating vertebral artery dissecting aneurysm (VADA) via Low-profile Visualized Intraluminal Support (LVIS) stent-within-Neuroform EZ stent. Methods : From January 2017 to June 2019, 18 consecutive patients with VADAs (ruptured : unruptured=5 : 13) were treated with the overlapping stents assisted-coiling technique in our center. The overlapping manner was a Neuroform EZ stent being deployed first, followed by LVIS stents placement using the 'shelf' technique. The patients' clinical characteristics, technical feasibility and safety, and immediate and follow-up angiographic results were retrospectively reviewed. Results : Seventeen (94.4%) procedures were technically successful with an exact deployment of the stents and patent parent or perforator arteries. The immediate angiographies after procedure confirmed Raymond class I, II, and III occlusion of VADAs were in 12 (66.7%), two (11.1%), and four cases (22.2%), respectively. Post-procedural complications developed in one patient (5.6%) with minor brainstem infarctions, which resulted from an in-stent thrombosis during the procedure. Angiographic follow-up at 5.7 months (range 3 to 9 months) demonstrated Raymond class I and II occlusion were in all cases (100%). The modified Rankin Scale scores at 21.3 months (range 15 to 42 months) 0-2 in 17 cases (94.4%) and three in one case (5.6%). Conclusion : Overlapping stents via LVIS stent-within-Neuroform EZ stent combined with coiling is safe and effective for patients with VADA in the midterm results.

• Korean Journal of Radiology
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• 제2권1호
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• pp.52-56
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• 2001

Extracranial carotid artery dissection may manifest as arterial stenosis or occlusion, or as dissecting aneurysm formation. Anticoagulation and/or antiplatelet therapy is the first-line treatment, but because it is effective and less invasive than other procedures, endovascular treatment of carotid artery dissection has recently attracted interest. We encountered two consecutive cases of trauma-related extracranial internal carotid artery dissection, one in the suprabulbar portion and one in the subpetrosal portion. We managed the patient with suprabulbar dissection using a self-expandable metallic stent and managed the patient with subpetrosal dissection using a balloon-expandable metallic stent. In both patients the dissecting aneurysm disappeared, and at follow-up improved luminal patency was observed.