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폐에 전이된 거대 연조직 육종(혈관외피세포종, 활막육종) -수술치험 2례-
김길동,정경영,신동환,Kim, Gil-Dong,Jeong, Gyeong-Yeong,Sin, Dong-Hwan 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.1
We report two cases of giant soft tissue sarcomas metastatic to the lung from lower extremities. The lung metastasis occurred 2 years later from original diagnosis in 27-year-old woman with hemangiopericytoma and 8 years later in 54-year-old woman with synovial sarcomtt. We had performed pleuropneumonectomies with partial resection of pericardium involved. The postoperative courses were uneventful and postoperative adjuvant therapy was begun.
박영환,장병철,신동환,조범구,Park, Yeong-Hwan,Jang, Byeong-Cheol,Sin, Dong-Hwan,Jo, Beom-Gu 대한흉부심장혈관외과학회 1996 Journal of Chest Surgery (J Chest Surg) Vol.29 No.8
본 연세대학교 의과대학 흉부외과학 교실에서는 1985년 부터 1992년까지 청색성 선천성 심장기형환자에서 시행한 체 폐동맥 단락술에 사용되 었던 PTFE (polytetrafluoroethylene) 인조 혈관을 재수술시 절 제하여 꽝학 현미경 및 전자 현미경으로 관찰하였다. 체폐 동맥 단락술의 종류는 Blalock-Taussig형 10 례. Waterstone-Cooley형 1례, Pott 형 1례등이었다. 사용된 PTFE 인조 혈관의 크기는 5mm가 10개, 4mm가 1개, 6mm가 1개였다 이들의 평균 사용 시간은 31개월(12개월에서 55개월)이었다. 10개월에서 20개월사이의 PTFE 인조 혈관은 틈새에 매우 많은 혈소판이 끼어 있었고 내막 비후가 관찰되었다. 40 개월이상 기능을 하는 PTFE 인조 혈관에서는 혈관 내피 세포가 광학 및 전자 현미경으로 관찰되었다. 막힌 PTFE 인조 혈관의 내면은 매우 심한 내막 비후와 혈전으로 차 있었다. 이와 같은 우리의 경험을 토대로 PTFE인조 혈관과 자신의 혈관이 연결되는 부위에 결체조직이 잘붙어 혈관내피세포가 덮을수 있게 된다면 혈소판의 응집을 막아 오랫동안 기능을 유지할 수 있을 것으로 생각된다. Histologic, and scanning electron microscopic observa ions were made of 12 biopsy specimens from polytetrdiluoroethylene (PTFE) grafts that had been Implanted as systemic-pulmonAry shunt for improving oxygenation of cyanotic congenital heart disease and harvested near the end of pulmonary artery side at the time of redo shunt or tonal correction between 1985 and 1992. The types of shunt operation are modified Blalock-Taussig shunt in 10 cases, Waterston-Cooley shunt in 1 And Potts shunt in 1 case. The 5 mm PTFE graft was used In 10, 4mm in 1 and 6mm in 1 case. The mean duration of implantalion was 0 $\pm$ 14.1 months(rl.on 12 months to 55 months). The plAtelets were aggregated between gaps'of Coretex surface and intimal thickening was noted about 10 to 20 months after implantation. Endothelial cells were found in the 40-months patent PTFE graft by light and scanning electron microscopy. In the specimen of poor flow or zero flow graft, severe intimal hyperplasia and thrombi which was made of platelets were noted . Based on this experience, we think that the patency will be maintained well if the connective tissue could be Hxed firmly over the Inner layer of the Goretex and the endothelial cell layer sllould form over the con- nective tissue and platelet aggregation should be prevented.
이준호(June Ho Lee),신동환(Dong Hwan Sin),김성걸(Seong Keol Kim) 한국생산제조학회 2018 한국생산제조학회지 Vol.27 No.2
Mechanical failure and noise due to vibration are problems associated with a high-speed winder when operated at a higher operation speed at an industrial site. Such a phenomenon is due to resonance owing to the close proximity of the operating speed and natural frequency of the winder. In order to solve this problem, a design to avoid resonance is required. A design is proposed to avoid natural frequencies near the operating speed (17,000 rpm). In this paper, the design parameters of a high-speed winder are defined with a manufacturer. Modal analyses were performed by changing design parameters using ANSYS to obtain the natural frequencies. In order to analyze deformation when a high-speed winder with an unbalanced mass was rotated at the operational speed, simulations for harmonic excitation were performed.
원발성 소세포폐암에서 염색체 16번의 단완에 위치한 종양억제유전자좌의 확인
기현정 ( Gi Hyeon Jeong ),신주혜 ( Sin Ju Hye ),장준 ( Jang Jun ),정경영 ( Jeong Gyeong Yeong ),신동환 ( Sin Dong Hwan ),김영삼 ( Kim Yeong Sam ),장윤수 ( Jang Yun Su ),김성규 ( Kim Seong Gyu ),곽승민 ( Gwag Seung Min ),김세규 ( 대한결핵 및 호흡기학회 2003 Tuberculosis and Respiratory Diseases Vol.55 No.6