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김은오,김희제,엄기성,조병식,이성은,양승아,이종욱,민우성 대한암학회 2011 Cancer Research and Treatment Vol.43 No.3
Glioblastoma multiforme (GM) is one of the most aggressive primary brain tumors, and has a poor prognosis despite intensive treatment. GM is also the most malignant astrocytoma, with histopathological features that include cellular polymorphism, rapid mitotic activity,microvascular proliferation, and necrosis. The causes of GM remain obscure, but several reports have shown associations between GM and genetic alterations and radiation exposure. Furthermore, high-dose chemotherapy/radiotherapy with autologous stem cell transplantation is increasingly being used to treat patients with leukemia, and patients who undergo stem cell transplantation have a higher risk of solid tumor cancer development later in life. Based on these associations, we discuss GM development in a patient who underwent chemoradiotherapy conditioning prior to stem cell transplantation.
경구 히알우론산 나트륨 복용후 발생한 약제 유발성 급성 간질성 신염
김은오,임정욱,이종훈,황현석,김석영 대한내과학회 2011 대한내과학회 추계학술발표논문집 Vol.2011 No.1
히알우론산 나트륨은 인체 결체조직의 세포 외 기질에 널리 분포되어 있는 다당류로 최근 2~3년 사이에 미용관련 분야에서 사용이 증가하고 있다. 저자들은 히알우론산 나트륨 경구 복용 후 발생한 약제 유발성 간질성 신염을 경험하였기에 이를 보고하는 바이다. 증례: 기저질환 없는 32세 여자가 내원 4주전 2주간의 경구 히알우론산 나트륨 120 mg/day복용 후 5kg의 체중증가를 동반한 안면 및 하지 부종을 주소로 내원하였다. 혈액검사상 백혈구5900/μl (호중구61%, 림프구26.5%, 단핵구5.6%, 호산구 6.6%), 혈중 요소질소 15.2 mg/dL, 혈청 크레아티닌 0.46 mg/dL, 단백질 4.3g/dL, 알부민 1.9g/dL, 총 콜레스테롤 506 mg/dL이었다. 소변검사에서는 단백뇨 ++++, 미세혈뇨 10~19/HFP, 농뇨 10~19/HFP, 24시간 단백은 9.62g이었다. 신장 조직검사에서는 광학현미경상 국소 관내 증식성 사구체신염과 세뇨관 위축, 호산구를 포함한 단핵세포의 침착 및 간질성 부종을 보여 급성 세뇨관 손상 및 간질성 신염 소견을 시사하였다. 전자현미경상 상피세포 족돌기의 광범위한 소실과 메산지움 영역의 전자밀도가 높은 침착물에 의한 확장 소견이 보였다. 면역형광염색에서는 IgA와 IgM 및 보체C3 에 대한 항혈청 양성 반응으로 IgA 신증이 동반된 것으로 생각되었다. 진단 후, 환자는 20일간 프레드니솔론 1 mg/kg/day 복용하였고 2.5kg의 체중감소와 알부민의 상승 및 단백뇨 음성으로 전환되었다. 이후 프레드니솔론은 감량, 중단하여 총 28일간 스테로이드 사용 후 치료를 종결하였다. 결론: 본 증례에서는 말초 호산구의 경한 증가 (6.6%) 이외에는 과민반응 소견이 없었다. 따라서, 히알우론산 나트륨 복용 후 특이 임상양상이 없더라도 단백뇨를 동반한 신손상이 발생한 경우 약제 유발성 간질성 신염의 가능성을 고려하여 약제 사용시 발생할 수 있는 부작용에 대해 주의가 필요하겠다.
R452B 냉매 적용 물대물 지열원 히트펌프 유닛의 냉난방 운전 성능 특성
최연성,강희정,김은오 한국 지열 · 수열에너지학회 2017 한국지열에너지학회논문집 Vol.13 No.4
Refrigerant having high global warming potentials will be phased out due to environmental protection issues. R410A has been widely used in geothermal heat pump. However, it has a little high GWP by 2088 value. One of the recommended substitute for R410A refrigerant is R452B which having a GWP by 698 value. In this paper, the heating and cooling performance of the water-to-water geothermal heat pump unit with R452B was experimentally investigated. The performance of the heat pump adopting R452B was also compared with the system applying R410A. The heating and cooling capacity of R452B heat pump system showed a slightly lower values within 2% comparing with R410A system. However, the R452B system’s coefficient of performance was enhanced by 5.2% and 13.7% at heating and cooling mode, respectively.
Stent Fracture at the Proximal Shaft of the Left Main Stem
이재호,서석민,김은오,안효준,이양원,조율희,백인운,오유석,유지현,승기배 대한심장학회 2011 Korean Circulation Journal Vol.41 No.12
Stent fracture is likely to be caused due to mechanical stress at the hinge point or kinking movement at the point of aneurysm formation with stent malapposition. To our knowledge, this is the first published report of stent fracture at the proximal shaft of the left main stem in a patient with acute myocardial infarction.
TNF-α 억제제로 치료중인 연소성 류마티스관절염 환자에게서 발생한 2차성 아밀로이드증
민홍기 ( Hong Ki Min ),윤문희 ( Moon Hee Yoon ),김은오 ( Eun Oh Kim ),김대원 ( Dae Won Kim ),김남용 ( Nam Yong Kim ),곽승기 ( Seung Ki Kwok ),박성환 ( Sung Hwan Park ),김호연 ( Ho Youn Kim ),주지현 ( Ji Hyeon Ju ) 대한류마티스학회 2012 대한류마티스학회지 Vol.19 No.5
Secondary amyloidosis is one of the most serious complications in chronic inflammatory diseases such as rheumatoid arthritis. The extracellular deposit of aggregates of amyloid leads to target organ dysfunction. The mainstay treatment of secondary amyloidosis is the control of underlying disease activity. Many reports have reported that TNF-α inhibitors improve clinical outcomes. Here, we encountered a 34-year-old patient with juvenile rheumatoid arthritis who developed secondary amyloidosis despite treatment with TNF-α inhibitors. We present this case and include a review of the literature.
반우호 ( Woo Ho Ban ),강현희 ( Hyeon Hui Kang ),백명기 ( Myong Ki Baeg ),김재경 ( Jae Gyung Kim ),김현진 ( Hyun Jin Kim ),백인운 ( In Woon Baek ),김은오 ( Eun Oh Kim ),고선혜 ( Sun Hye Ko ),이상학 ( Sang Haak Lee ),문화식 ( Hwa Si 대한결핵 및 호흡기학회 2011 Tuberculosis and Respiratory Diseases Vol.70 No.4
Herein we report the case of a 71-year-old woman who complained of fatigue and enlarged right axillary lymph nodes for 18 months. At her first visit, her chest X-ray showed diffuse nodular opacities in both lung fields. Initial excisional biopsy of the axillary lymph nodes showed granulomatous lesions and acid fast bacilli were seen on Ziehl-Neelsen staining. However, even after 15 months of anti-tuberculosis (TB) medication, her right axillary lymph nodes were enlarged. We re-performed an excisional biopsy of the nodes, which showed Hodgkin`s lymphoma (HL). A retrograde review of the biopsy before anti-tuberculous medication, revealed HL coexisting with TB. HL and TB cause difficulties in differential diagnosis due to similarities in clinical course, imaging procedures and histopathological analysis of the involved tissue. Therefore, it is important to consider the possibility of concurrent HL and TB when patients who undergo treatment for TB or chemotherapy for lymphoma complain of persistent systemic symptoms or enlarged lymph nodes.
십이지장 우회술을 받은 신장이식환자에서 반복적 급성 거부반응으로 인한 이식 신소실
김하늘 ( Ha Neul Kim ),조율희 ( Yul Hee Cho ),김영신 ( Young Shin Kim ),전현지 ( Hyun Ji Chun ),최수진 ( Su Jin Choi ),김은오 ( Eun Oh Kim ),양철우 ( Chul Woo Yang ) 대한내과학회 2012 대한내과학회지 Vol.83 No.3
The calcineurin inhibitor-immunosuppressant tacrolimus is widely used in patients undergoing kidney transplantation. Although tacrolimus is absorbed from the entire gastrointestinal tract, the duodenum is the primary site of its absorption and metabolism. Therefore, duodenal bypass surgery in a renal transplant recipient can significantly disrupt tacrolimus absorption and metabolism, Here, we report a case of allograft failure that developed after duodenal bypass surgery, The patient was a 41-year-old woman who received a deceased donor kidney transplantation, She underwent a gastrojejunostomy due to a duodenal perforation and pancreatitis after endoscopic retrograde cholangiopancreatography, After the surgery, her blood tacrolimus level decreased gradually, and remained lower than therapeutic target levels, even after the tacrolimus dose was increased from 5 to 12 mg/day. Repetitive rejection developed and the patient suffered allograft failure 3 months after bypass surgery. This case raises the importance of drug absorption in renal transplant recipients undergoing duodenal bypass surgery.