• Journal of Chest Surgery
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• v.42 no.6
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• pp.757-762
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• 2009

Background: Compression of the left common iliac vein by the overriding common iliac artery is frequently combined with acute deep vein thrombosis in patients with May-Thurner Syndrome. We evaluate the results of treatment with thrombolysis and thrombectomy followed by stenting in 34 patients with May-Thurner Syndrome combined with lower extremity deep venous thrombosis. Material and Method: The authors retrospectively reviewed the records of 34 patients (mean age: $65{\pm}14$ year old) who had undergone stent insertion for acute deep vein thrombosis that was caused by May-Thurner syndrome. After thrombectomy and thrombolysis, insertion of a wall stent and balloon angioplasty were performed to relieve the compression of the left common iliac vein. Urokinase at a rate of 80,000 to 120,000 U/hour was infused into the thrombosed vein via a multi-side hole thrombolysis catheter. A retrieval inferior vena cava (IVC) filter was placed to protect against pulmonary embolism in 30 patients (88%). Oral anticoagulation with warfarin was maintained for 3 months, and follow-up Multi Detector Computerized Tomography (MDCT) angiography was done at the date of the patients' hospital discharge and at the 6 months follow-up. Result: The symptoms of deep venous thrombosis disappeared in two patients (4%), and there was clinical improvement within 48 hours in twenty eight patients (82%), but there was no improvement in four patients (8%). The MDCT angiography at discharge showed no thrombus in 9 patients (26%) and partial thrombus in 21 (62%), whereas the follow-up MDCT at $6.4{\pm}5.5$ months (32 patients) revealed no thrombus in 23 patients (72%), and partial thrombus in 9 patients (26%). Two patients (6%) had recurrence of DVT, so they underwent retreatment. Conclusion: Stent insertion with catheter-directed thrombolysis and thrombectomy is an effective treatment for May-Thurner syndrome combined with acute deep vein thrombosis in the lower extremity.

• Journal of the korean academy of Pediatric Dentistry
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• v.44 no.2
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• pp.235-242
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• 2017

Marsupialization and decompression constitute a well-established procedure for treating cavitary bone lesions of the jaw. The technique can be a primary treatment option, especially for pediatric patients with large cysts or lesions involving vital anatomical structures, such as a developing tooth germ. In this procedure, a decompression stent, such as a customized acrylic obturator or space-maintaining appliance, silicone tube, or nasal cannula, is inserted to maintain the patency of the cyst. However, this may cause clinical problems, such as irritation or trauma to the adjacent tissues, as well as discomfort to the patient, or failure of the stent due to cyst shrinkage. It can also be a reason for patient noncompliance. In the cases described here, a minimally invasive marsupialization technique using a metal tube made from a 16-gauge needle was used for odontogenic cysts in pediatric patients associated with unerupted teeth. Through this method, the lesions were removed, with patient cooperation, and the cyst-associated teeth erupted spontaneously.

• Journal of the Korean Society of Radiology
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• v.14 no.2
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• pp.179-191
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• 2020

The aim of this study was to investigate the predictors of major adverse cardiac events (MACE) in patients with drug-eluting balloon (DEB) for in-stent restenosis (ISR) lesion. Total of 257 patients who developed ISR on follow-up coronary angiography (66.1 ± 10.1years, 172 males) in Chonnam National University Hospital between October 2012 and January 2017 were enrolled. We divided the patients into two groups; group I (MACE group; n= 35) and group II (No MACE group; n= 222). A multivariate logistic regression analysis revealed that type IV ISR (HR=4.179, 95% C.I.=1.851-9.437 p= 0.001), lesion length > 25 mm (HR=8.773, 95% C.I.=1.898-40.546 p=0.005), number of ISR recurrence > 2 (HR=4.693, 95% C.I.=1.259-17.490 p= 0.021) were independent factors for MACE after DEB in ISR lesions.

• Journal of Chest Surgery
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• v.37 no.11
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• pp.911-917
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• 2004

Background: There are limited number of reports on May-Thurner syndrome (Iliac vein compression syndrome) in Korea, We analysed the clinical features, diagnostic modalities and endovascular treatment of May-Thurner syndrome. Material and Method: We reviewed 12 cases of May-Thurner syndrome between March 2001 and June 2003. Mean age was $57.6\pm2$ years. We were used in venography, color doppler and computed tomographic angiography as diagnostic modalities and in thrombolysis, thrombectomy, angioplasty and stent insertion as endovascular treatment. Result: Clinical features showed edema of lower extremities in 4 patients, pain of lower extremities in 1 patient, edema with pain in 5 patients, and all in 1 patient. In one patient, he did not have any pain and any edema of lower extremities but was diagnosed as May-Thurner syndrome using venography due to varicose veins on lower extremities. Diagnostic modalities included venography, computed tomographic angiography in all patients with clinical presentation except in one patient and color doppler was only performed only in 4 patients. Four kinds of endovascular treatment were performed for May-Thurner syndrome, angioplasty in 11 patients, stent insertion in 10 patients, thrombectomy in 9 patients and thrombolysis for 7 patients. Nine patients were followed up and we can show good blood flow in Left iliac vein for 7 of 9 patients. Conclusion: it is necessary to recognize the possibility of May-Thurner syndrome in Deep vein thrombosis patients and we should use a variety of modalities to diagnose May-Thurner syndrome. Finally, endovascular treatment is a safe and effective therapy for May-Thurner syndrome.

• Tuberculosis and Respiratory Diseases
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• v.39 no.4
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• pp.318-324
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• 1992

Acquired tracheobronchial stenosis has resulted from vehicular accidents, prolonged tracheal intubation, sleeve resection, tuberculosis and sarcodosis. Various modalities of therapy for the relief of such stenosis included surgery, cryotherapy, laser photoresection, and sometimes balloon dilatation. Several recent reports have described the use of self-expandable metal stents for the dilatation of stenotic areas in the tracheobronchial tree. Three patients of benign acquired tracheobronchial stenosis were treated with self-expandable metal stents, who had shown little response to several times of balloon dilatations; One patient had a tracheal stenosis caused by intubation, one a right main bronchial stenosis developed after reconstructive surgery of traumatic bronchial rupture, and the other a left main bronchial stenosis caused by longstanding endobronchial tuberculosis. We found that the using stent in benign acquired tracheobronchial stenosis can be effectively performed with alleviation of clinical symptoms and lung function. And even in longstanding localized stenosis of main bronchus without distal bronchial destruction, lung perfusion also improved.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1977.06a
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• pp.9.1-10
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• 1977

Many etiological factors playa significant role in the development of tracheal stenosis; too high tracheostomy (Jackson, 1921), too small stoma (Greisen, 1966), the treatment with respirator using cuffed tube (Pearson et al., 1968; Lindholm, 1966; Bryce, 1972) and infection (Pearson, 1968). Although the incidence has been reduced due to development of surgical technique and antibiotics, the frequency of tracheal stenosis which produces symptoms after tracheostomy ranges from 1.5 per cent (Lindholm, 1967). In the management of the stenosis, mild cases are treated by mechanical dilatation with silicon tube or stent (Schmigelow, 1929; Montgomery, 1965) combined steroid (Birck, 1970), and in the cases of stenosis causes, these removed under the are bronchoscopy. But in severe stenosis, transverse resection with subsequent end-to-end anastomosis has been used in recent years (Pearson et al., 1968). During about 10 years, 1967 to 1977, a total of 23 patients with tracheal stenosis complicated among the 1, 514 tracheostomies have been treated in Severance Hospital. Now, we have obtained following conclusions by means of clinical analysis of 23 cases of tracheal stenosis. 1. The frequency of tracheal stenosis was 23 cases among 1, 514 cases of tracheostomy (1.5%). 2. Under the age of 5, these are 12 cases (52.2 %). 3. The sex incidence was comprised of 18 males and 5 females. 4. The duration of tracheostomy ranges from 4 days to 16 months. 5. The primary diseases requiring tracheostomy were following; central nerve system lesions 11 cases, upper air way obstruction 10 cases, extrinsic respiratory failure 2 cases. 6. Severe wound infections were only 2 cases. 7. The methods of treatment applied to tracheal stenosis were following; closed observation only 5 cases, nasotracheal intubation combined steroid 5 cases, T-tube stent combined steroid 3 cases, fenestration op. 4 cases, revision 4 cases and transverse resection and end-to-end anastomosis 2 cases.

• Journal of Gastric Cancer
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• v.9 no.1
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• pp.6-9
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• 2009

Gastric cancer with gastric outlet obstruction has a high incidence of direct invasion into neighboring organs, with a low resection rate and a poor prognosis. Traditionally, open gastrojejunostomy has been the standard palliative treatment in these patients. Recently, endoscopic self-expanding metal stents have been used increasingly for the palliative treatment of malignant gastric outlet obstruction, but the choice of modality to treat the obstruction caused by gastric cancer is still controversial. Many studies have shown that endoscopic stenting is less invasive and offers not only a shorter time to oral intake and length of hospital stay, but also less frequent complications compared to open gastrojejunostomy. However, recurrent obstruction by tumor overgrowth and ingrowth occur more frequently and re-intervention for recurrent obstructive symptoms are more frequently performed after stent placement than after gastrojejunostomy. Thus, stent placement may be associated with more favorable results in patients with a relatively short life expectancy, while gastrojejunostomy is preferable in patients with a more prolonged prognosis. Also, open surgery affords a greater chance for curative surgery. However, most underlying diseases analyzed in previous studies were pancreaticobiliary malignancies, and there have been few prospective studies specific for patients with gastric cancer. Additional randomized controlled trials with larger sample sizes are expected to decide the treatment modality for unresectable gastric cancer with gastric outlet obstruction.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.557-558
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• 2006

• Korean Journal of Bronchoesophagology
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• v.10 no.2
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• pp.9-16
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• 2004

• Proceedings of the Korean Fiber Society Conference
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• 2007.11a
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• pp.315-316
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• 2007