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Comparison between M. Avium and M. Intracellulae Infections in Lung Using HRCT Scoring System
( Sung Chul Park ),( Yong Chul Lee ),( So Ri Kim ),( Gong Yong Jin ),( Yang Keun Rhee ),( Heung Bum Lee ),( Seoung Ju Park ),( Chi Ryang Chung ),( Seung Yong Park ) 대한결핵 및 호흡기학회 2012 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.114 No.-
The prevalence of pulmonary diseases caused by non-tuberculous mycobacteria appears to be increasing worldwide. The predominant pathogen is M. Avium complex, which is comprised of M. Avium and M. Intracellulare and they have been considered to possess the similar characteristics. However, there is little information on the comparative data of their clinical and radiologic features. This retrospective analysis was performed on 188 patients with pulmonary infection by MAC complex diagnosed from January 2006 to December 2011 in a teaching Hospital. In both pulmonary infections with M. Avium and M. Intracelluae, the most common pulmonary comorbidities are COPD and previous history of pulmonary tuberculosis. In addition, the pathologic lesions by both pathogens were involved in right middle lobe and left lingular segments predominantly. Subcentimeter nodules, cyllindric bronchiectasis, and segmental or sub-segmental consolidation are representative radiologic findings in pulmonary infections with both species. Therapeutic responses are also similar after the standard treatment, although it seems to be more favor in M. M. Intracelluae (69%) than those in M. Avium (61%). These findings suggest that M. Avium and M. Intracellulae infection show similar clinical and radiologic features in the radiologic scoring system by HRCT.
Recurrent thrombosis after endovascular treatment for malignant superior vena cava syndrome
( Sang Ho Lee ),( Sun Young Kim ),( Heung Tae Kim ),( Chang Woo Shim ),( Ho Seok Chi ),( Hye In Lee ),( Do Il Choi ),( Hyun Bum Kim ),( In Jun Lee ) 대한내과학회 2015 대한내과학회 추계학술대회 Vol.2015 No.1
Endovascular treatment (EVT) including angioplasty and stenting is an effective treatment for superior vena cava (SVC) syndrome. Recurrence of SVC syndrome is mainly caused by tumor progression and occurs in around 20% after EVT, but sometimes venous thrombosis within stent accounts for recurrence of SVC syndrome. Anticoagulation after EVT is still a controversial issue. In our case, a 73 year-old man with SVC syndrome caused by mediastinal lymph node metastasis from non-small cell lung cancer underwent EVT followed by anticoagulation with low molecular weight heparin (LMWH), but symptomatic progression due to in-stent thrombosis necessitated the second procedure after two weeks. A total of 4 sessions of EVT and anticoagulation with LMWH, warfarin and rivaroxaban did not induce durable resolution of in-stent thrombosis. The 4th EVT was done with stent -graft, but computed tomography after the last procedure revealed remained thrombus in SVC and newly developed pulmonary thromboembolism during warfarinization. Our case suggests refractory in-stent thrombosis could develop despite of anticoagulation after EVT for SVC syndrome.
Primary Thoracic Sarcoma in Anterior Mediastinum
( Sung Chul Park ),( So Ri Kim ),( Yong Chul Lee ),( Na Ri Lee ),( Yang Keun Rhee ),( Heung Bum Lee ),( Seoung Ju Park ),( Chi Ryang Chung ),( Seung Yong Park ) 대한결핵 및 호흡기학회 2012 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.114 No.-
Most common anterior mediastinal mass is thymoma, lymphoma and teratoma. Sarcomas are rare connective tissue malignant neoplasm which can be affected various locations, most frequently occur in the extremities. In fact, primary mediastinal sarco-mas are extremely uncommon, less than 2% of all soft tissue sarcoma cases. The majority of primary thoracic sarcomas are originated from chest wall, pleural spaces and nerve sheath. Therefore, the primary thoracic sarcomas involved in the lung parenchyma are rarer with poor information regarding the proper management and its outcomes. Herein, we report a rare and interesting case of primary thoracic high-grade sarcoma occupying anterior mediastinum and left lower lobe of the lung of a 35-years-old man, with reviewing the previous reports and literatures.
A Case Study on an Inspection of Non-rigid Part
Chi- Sang Park,Sung-Ho Chang,Ki-Youn Kwon,Wang-Bum Lee 한국산업경영시스템학회 2018 한국산업경영시스템학회 학술대회 Vol.2018 No.추계
Manufactured part based on the drawing must be inspected for quality control. If no restraint note is specified on the drawing, the part should be inspected without any clamping(restraining). However if there is a restraint note, the part is non-rigid part. When inspecting non-rigid parts, there are two areas that need special attention: proper restraining of the part and determining which tolerances are checked in the retrained state. Mounting and restraining the part on the appropriate datum features is the first area. When retraining the part, the only forces that should be used are the ones described in the restraint note. The sequence for applying the restraining force specified on the drawing should be followed. The location, direction and amount of force should be in accordance with the restraint note. Once the part is restrained, the tolerances can be verified. When inspecting non-rigid part, the inspector needs to determine which dimensions and tolerances are to be checked in the retrained state. Careful reading of the restraint note will indicate if all or certain tolerances are to be checked in the restrained condition. Each feature control frame should be examined for the use of free state modifier. If a free state modifier is specified, the geometric control should be inspected with the part in the free state. When inspecting a non-rigid part on a coordinate measuring machine(CMM), fixture and clamp should be used to locate and clamp the part. The fixture will establish the proper part restraint conditions and datums. If a fixture is not used when inspecting non-rigid parts, it will be difficult or impossible repeatable measurements.
Structural and Electrical Properties of Nb<sub>3</sub> I<sub>8</sub> Layered Crystal
Kim, Bum Jun,Jeong, Byung Joo,Oh, Seungbae,Chae, Sudong,Choi, Kyung Hwan,Nanda, Sitansu Sekhar,Nasir, Tuqeer,Lee, Sang Hoon,Kim, Kwan-Woo,Lim, Hyung Kyu,Chi, Linlin,Choi, Ik Jun,Hong, Min-Ki,Yi, Dong Wiley (John WileySons) 2019 Physica Status Solidi. Rapid Research Letters Vol.13 No.3
Ahn, Chi Bum,Kim, Youngjo,Park, Sung Jean,Hwang, Yongsung,Lee, Jin Woo Informa UK (TaylorFrancis) 2018 Journal of Biomaterials Science. Polymer Edition Vol. No.
<P>Poly(propylene fumarate) (PPF) has known to be a good candidate material for cartilage tissue regeneration because of its excellent mechanical properties during its degradation processes. Here, we describe the potential application of PPF-based materials as 3D printing bioinks to create macroporous cell scaffolds using micro-stereolithography. To improve cell-matrix interaction of seeded human chondrocytes within the PPF-based 3D scaffolds, we immobilized arginine-glycine-aspartate (RGD) peptide onto the PPF scaffolds. We also evaluated various cellular behaviors of the seeded chondrocytes using MTS assay, microscopic and histological analyses. The results indicated that PPF-based biocompatible scaffolds with immobilized RGD peptide could effectively support initial adhesion and proliferation of human chondrocytes. Such a 3D bio-printable scaffold can offer an opportunity to promote cartilage tissue regeneration.</P>