• Journal of Chest Surgery
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• v.29 no.5
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• pp.589-592
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• 1996

We report two cases of the thoracoscopic thymectomies for patients of myasthenia gratis with tracheostomy (Osserman's Group-ll-C-1). The Irst case was 47-year-old male wlth generalized myas- thenia gravis who was under the mechani al ventilator therapy with tracheostomy. The second case was 60-year-old male with deteriorating generalized myasthenia gratis after the mechanical ventilator therapy. We decided to resect the thymus by vldeo-assisted thoracoscopy to prevent the ouurrence of postoperative complications, especially mediastinitis because all two cases were under tracheostomy state. We could stop the mechanical ventilator therapy on the postoperati'fe 16th day and 3rd day respect- ively and they were recovered without mediastinitis. So we concluded that video-assisted thoracoscopic thymectomy is a good alternative surgical method for myasthenia gratis patients with tracheostomy.

• Journal of Chest Surgery
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• v.29 no.6
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• pp.681-688
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• 1996

Most patients with carcinoma of the cervico-thoracic esophagus present with locally advanced disease. For this reason, therapeutic efforts have been largely palliative, focused on eradicating locoregional dis- ease, and have been attended by high morbidity rates. A 61 year old man was diagnosed to advanced cervicothoracic esophageal cancer(Type 1) and reli ved concurrent chromo-radiotherapy for 2 months in St. Mary's Hospital. And then he underwent transhiatal subtotal esophagectomy and radical dissection of cervical and superior mediastinal Iymph nodes with thoracoscopy. The histologic diagnosis was early esophageal cancer(Type 0-llb, SM2) and the curability of operation was calculated to highly curative(Clll). And the postoperative course was unevenful.

• Journal of Chest Surgery
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• v.40 no.6 s.275
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• pp.459-462
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• 2007

Pericardial cysts are uncommon benign congenital mediastinal lesions and they are most often found in either cardiophrenic angle. We present here one case of atypically located pericardial cyst that was located in the sub-pulmonary region. The clinicians should take into consideration this entity in the differential diagnosis of cystic lesion of the mediastinum. The diagnostic difficulties that are encountered and the utility of video-assisted thoracoscopy are described.

• Tuberculosis and Respiratory Diseases
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• v.80 no.2
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• pp.194-200
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• 2017

Background: Medical thoracoscopy (MT) is a minimally invasive, endoscopic procedure for exploration of the pleural cavity under conscious sedation and local anesthesia. MT has been performed at the Seoul National University Hospital since February 2014. This paper summarizes the findings and outcomes of MT cases at this hospital. Methods: Patients who had undergone MT were enrolled in the study. MT was performed by pulmonologists, using both rigid and semi-rigid thoracoscopes. During the procedure, patients were under conscious sedation with fentanyl and midazolam. Medical records were reviewed for clinical data. Results: From February 2014 to January 2016, 50 procedures (47 cases) were performed (diagnostic MT, 26 cases; therapeutic MT, 24 cases). The median age of patients was 66 years (59-73 years), and 38 patients (80.9%) were male. The median procedure duration from initial incision to insertion of the chest tube was 37 minutes. The median doses of fentanyl and midazolam were $50{\mu}g$ and 5 mg, respectively. All procedures were performed without unexpected events. Of the 26 cases of pleural disease with an unknown cause, 19 were successfully diagnosed using MT. Additionally, diagnostic MT provided clinically useful information in the other six patients. Therapeutic MT was very effective for treatment of malignant pleural effusion or empyema. The median number of days with chest tube drainage was 6 (3 days for diagnostic MT and 8 days for therapeutic MT). Conclusion: MT is a useful and necessary procedure for both diagnosis and treatment of pleural diseases.

• Journal of Chest Surgery
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• v.29 no.7
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• pp.723-727
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• 1996

An adequate exposure is important in thoracoscopic procedures. The insufflation of $CO_2$has been demonstrated to aid in compressing lung parenchyma, and act as a retractor when combined with changes in patient's position. However, a recent study demonstrated that $CO_2$insufflation during thoracoscopy in the pig has adverse hemodynamic consequences. We prospectively studied 12 patients undergoing thoracoscopy to evaluate the effect of $CO_2$insufflation in the clinical setting. The mean arterial pressure, heart rate, central venous pressure, arterial oxygen saturation, and end-tidal $CO_2$pressure were monitored. Measurements were determined at baseline, at the initiation of one-lung ventilation, and at intrapleural pressure of 5, 10, 15 mmHg and following results were obtained. 1) The insufflation of 5 to 15 mmHg of $CO_2$had no significant effect on the mean arterial pressure, heart rate, arterial oxygen saturation. 2) The end-tidal $CO_2$pressure rose from 31.00$\pm$1.67 mmHg to 38.49$\pm$1.82 mmHg at an intrapleural pressure of 15 mmHg(p<0.05). 3) The central venous pressure rose from 7.75$\pm$0.76 mmHg to 12.83$\pm$1.64 mmHg and 16.16$\pm$l.97mmHg at an intrapleural pressure of 10 and 15 mmHg(p<0.05). 4) The low pressure (<10 mmHg) insufflation is a safe adjunct to the conduct of thoracoscopic surgical procedures.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2006.05a
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• pp.157-157
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• 2006

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2008.10a
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• pp.191-191
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• 2008

• Journal of Chest Surgery
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• v.26 no.1
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• pp.67-70
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• 1993

Asian countries including Korea, Japan, China, Taiwan, and Philippines are endemic area of Paragonimiasis as people who live those countries have special diet habbit to ingest raw fish and meat. Of the Paragonimus westermani infestation, mediastinal paragonimiasis is a rare condition because of its life cycle. We experienced a case of mediastinal parasitic cyst resected under video-thoracoscopy, which was confirmed as paragonimiasis granuloma postoperativley.

• Tuberculosis and Respiratory Diseases
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• v.47 no.6
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• pp.727-734
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• 1999

본원의 비데오 흉강경술 경험과 문헌에서 볼 때, 흉막강 질환에서 흉강경술의 역활은 수기가 국소 또는 경막하 마취 혹은 전신 마취에서 가능하고 작은 구경의 흉강경으로 전 흉막강을 관찰할 수 있으므로 진단 및 치료 효과가 우수하였다. 흉막강 질환에서의 주요 적응증은 흉수, 농흉, 기흉, 흉막 종양, 흉막의 외상, 흉막강내 이물의 진단 및 치료되고 있다. 흉막강내 각종 수기에 사용하는 기구의 개발과 수기의 발전으로 흉막강내 질환에 대한 치료 성적은 전통적인 개흉수술에 비교하여 우수한 결과를 나타내고 있다.

• Korean Journal of Bronchoesophagology
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• v.16 no.2
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• pp.105-108
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• 2010

The prevalence of gastroesophageal reflux disease(GERD) has been increased recently in Korea. Most patients who have GERD are well treated by medication. But patients who have suboptimal disease control under medical therapy are needed further treatment. Nowadays minimally invasive surgery using laparoscopy and thoracoscopy has become popular in the operation of GERD although antireflux surgery is vary. Antireflux surgery is a well-documented, effective therapeutic alternative to control GERD.