• Korean Journal of Radiology
• /
• v.1 no.3
• /
• pp.169-171
• /
• 2000

In order to relieve mechanical obstruction caused by rectal carcinoma, a bare rectal stent was inserted in the sigmoid colon of a 70-year-old female. The procedure was successful, and for one month the patient made good progress. She then complained of abdominal pain, however, and plain radiographs of the chest and abdomen revealed the presence of free gas in the subdiaphragmatic area. Surgical findings showed that a spur at the proximal end of the bare rectal stent had penetrated the rectal mucosal wall. After placing a bare rectal stent for the palliative treatment of colorectal carcinoma, close follow-up to detect possible perforation of the bowel wall is necessary.

• Journal of Technologic Dentistry
• /
• v.42 no.2
• /
• pp.149-162
• /
• 2020

Purpose: The purpose of this study was to conduct a cost accounting of implant prosthesis according to the fabrication activities. Methods: In this study, the cost price of implant prosthesis fabrication activities was calculated by the bottom-up costing approach for material and labor cost and the top-down costing approach for expenses and other. Results: The total cost price was estimated to 220,000 ~ 310,000 won per one implant prosthesis. By product, the screw type was estimated to 220,000 ~ 230,000 won, and when the stent and tray were included, it was 260,000 ~ 270,000 won, which increased about 40,000 won. And, the cement type with more material and labor time was estimated to 250,000 ~ 260,000 won, and when the stent and tray were included, it was about 300,000 won. Conclusion: In terms of the fabrication cost ratio by items, it was shown that material cost and labor cost accounted for about 40% and 30% of the total cost structure for resin case, respectively, which was the opposite for porcelain. It was shown that expenses and general administrative expenses accounted for about 15%, and profits were about 11% ~ 14% in both cases.

• Journal of Chest Surgery
• /
• v.43 no.1
• /
• pp.100-103
• /
• 2010

We report her on a rare case of a renal stent that migrated into the right ventricle in a patient with nutcracker syndrome. A 29-year-old woman was admitted to the hospital and she was suffering from flank pain. The computed tomography of the abdomen demonstrated that the left renal vein was compressed between the abdominal aorta and the superior mesenteric artery (nutcracker syndrome). A self expandable stent was placed across the left renal vein for treating her nutcracker syndrome. The next day after the procedure, the follow up chest radiograph showed that the displaced stent had migrated into the right ventricle. After percutanous endovascular stent removal had failed, the stent was ultimately removed by performing cardiac surgery. At the $6^{th}$ postoperative month, there have been no abdominal or cardiac symptoms.

• Applied Chemistry for Engineering
• /
• v.29 no.5
• /
• pp.497-502
• /
• 2018

The coronary artery disease (CAD) is rapidly increasing such as angina pectoris and atherosclerosis. The CAD is induce by cholesterol and calcium like plaque absortion to artery wall. The percutaneouss coronary intervention is non-invasive treatment that narrowed-artery is expand by using balloon catheter and bare metallic stent. The metallic stents have been effective in reducing the dead by coronary artery disease, but the permanent presence of the metallic stent has been associated with persistent inflammation, and incidence of late thrombosis. Therefore, development bioresorbable vascular scaffold (BRS) is rapidly increasing for treatment of long-term complications and arterial restenosis by permanentmetal prosthesis such as stent. The review discusses the BRS trend for successfully development.

• Journal of Chest Surgery
• /
• v.33 no.7
• /
• pp.601-604
• /
• 2000

Actinomycosis is an indolent, suppurative infection caused by an anaerobic gram-positive organism(usually actinomyces israelii) which usually causes infection in the face, mediastitum, lung, and abdomen. Primary esophageal actinomycosis which is not related with pulmonary or mediastinal actinomycosis, is very rare, especially in immunocompetent host. A 58-year-old woman has been suffered from dysphagia, odynophagia, and chest pain after insertion of esophageal stent in esophageal acid stricture. She underwent a esophagectomy with esophagogastrostomy for above mentioned symptoms. Pathologic diagnosis was a esophageal actinomycosis.

• Journal of Dental Rehabilitation and Applied Science
• /
• v.37 no.3
• /
• pp.147-156
• /
• 2021

There are various treatment options such as conventional complete denture, hybrid prosthesis and implant-supported fixed prosthesis for fully edentulous patients. In case of implant-supported fixed prosthesis, compared to removable prosthesis, it is difficult to place the implant in the correct position considering the anatomical contours of the final prosthesis. In this case, a full mouth rehabilitation with implant-supported fixed prosthesis was performed for a patient who required extraction of all remaining teeth due to dental caries and chronic periodontitis. In the implant placement stage, the implant was placed in the desired position using a surgical guide fabricated considering the anatomical contours of the final prosthesis, and the function and esthetics were evaluated through correction and re-fabrication of the fixed provisional restoration. A final restoration of porcelain fused to gold prosthesis was delivered to the patient based on the provisional restoration. To cope with complications such as loosening of screws and fracture of porcelain, a screw-retained type prosthesis was fabricated for the posterior part and a screw-cement-retained type prosthesis for the anterior part. As a result, the patient showed an improved prognosis in terms of functional and esthetics after the final prosthesis was delivered.

• Korean Journal of Bronchoesophagology
• /
• v.8 no.1
• /
• pp.22-28
• /
• 2002

Background and Objectives : The aim of the this study is to determine the efficacy of an external prosthesis made of ringed Polytetrafluoroethylene to prevent Postanastomotic stenosis after surgical correction of extensive tracheal defects in rabbits. Materials and Methods : Thirty rabbits were used, divided into two groups of 15 animals each. Group A rabbits underwent resection of six-ring segments of the cervical trachea and tracheal end-to-end anastomosis. The Procedure used in group B was similar to that used in group A. but the tracheal anastomosis was supported by an external ringed polytetrafluoroethylene prosthesis. After six months, rabbits were killed and tracheas were resected and then compared the postanastomotic tracheal stenosis using morphometry. Results : Anteroposterior diameter, transverse diameter, cross sectional area and intra luminal perimeter of trachea was greater in group B than group A. Also inflammatory changes of mucosa and submucosa were greater in group A than group B. Conclusion : A ringed PTFE as a external stent was effective to prevent tracheal stenosis resulting from the extensive tracheal resection and tracheal reconstruction in rabbits.

• Tuberculosis and Respiratory Diseases
• /
• v.53 no.3
• /
• pp.325-331
• /
• 2002

Postpneumonectomy syndrome is a rare complication that usually occurs in younger patients within the first year after a right total lung resection. Its clinical presentations are stridor, dyspnea, and recurrent pulmonary infections. An airway obstruction secondary to the extreme mediastinal shift and ratation after a pneumonectomy is the main mechanism. It is commonly complicated with tracheobronchomalacia due to longstanding airway compression. The management modalities involve a repositioning of the mediastinum with volume expansion of the pneumonectomy site by a expandable prosthesis. however, other methods including an endobronchial stent insertion should be considered in the presence of a tracheobronchomalacia or in poor surgical candidates. Here we describe a case of postpneumonectomy syndrome complicated by a bronchomalacia, which was successfully treated with a self-expandable endobronchal stent.

• The Journal of Advanced Prosthodontics
• /
• v.5 no.1
• /
• pp.67-72
• /
• 2013

Traumatic defects are mostly accompanied by hard and soft tissue loss. This report describes the surgical and prosthetic treatment of a patient with post-traumatic mandibular defect. A split-thickness skin graft was performed prior to implant placement and prefabricated acrylic stent was placed to hold the graft in place. The esthetic and functional demands of the patient were fulfilled by implant-supported screw-retained fixed prosthesis using CAD-CAM technology.

• The Journal of Korean Academy of Prosthodontics
• /
• v.56 no.2
• /
• pp.126-133
• /
• 2018

The development of cone beam computerized tomography (CBCT) allows three-dimensional analysis of the patient's anatomy. The surgical guide is a combination of CBCT, computer-aided design/computer-aided manufacturing (CAD/CAM) and implant diagnostics software, which allows well planned prostheses design and ideal implant placement. Guided surgery minimizes possible anatomical damage and allows for more reproducible treatment planning. In this case, the operation time was shortened by using a surgical guide for multiple implants placement in a fully edentulous patient. Immediate loading were performed more easily using preliminary preparation of provisional prosthesis. The patient was satisfied with improved esthetics and chewing function.