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증례 : 소화기 ; 등쪽 췌장무발생과 폐 낭종성병변을 동반한 위의 중복낭종
임성민 ( Sung Min Lim ),이혁 ( Hyeug Lee ),전은정 ( Eun Jung Jeon ),오정환 ( Jung Hwan Oh ),이상학 ( Sang Haak Lee ),최상욱 ( Sang Wook Choi ),이성 ( Seong Lee ) 대한내과학회 2009 대한내과학회지 Vol.76 No.2
위의 중복 낭종은 드문 선천성 기형으로, 본 증례에서는 특별한 증상 없이 건강 검진에서 발견된 폐의 낭종성 병변으로 내원하여 우연히 진단되었다. 폐의 낭종성 기형과 동반된 식도 중복이나 위의 중복은 보고되고 있으며, 환자의 경우도 연관된 선천성 기형 가능성을 배제할 수 없는 상태이다. 또한 특별한 증상은 없었지만, 검사에서 우연히 췌장의 배쪽 무발생이 발견되었으며, 우리나라에서 위의 중복낭종과 동반하여 보고된 증례는 없다. 이에 저자들은 문헌고찰과 함께 증례를 보고하는 바이다. Gastric duplication cysts and dorsal pancreatic agenesis are rare congenital anomalies, and little is known of the association between these two anomalies. A 17-year-old woman was admitted with a cystic lung mass detected as part of a health screening program. Chest computed tomography (CT) showed a cystic lung lesion in the right lower lobe and an incidental cystic abdominal mass. She had no specific symptoms or signs. Abdominal CT and endoscopic ultrasonography (EUS) revealed a 9×7×5.5-cm cystic mass and agenesis of the body and tail of the pancreas. The cyst was removed successfully using laparoscopic gastric wedge resection. Microscopically, the muscle coat of the cyst wall was fused with the muscle layer of the stomach. Therefore, the cystic mass was diagnosed as a gastric duplication cyst. We present a patient with a pulmonary cystic lesion associated with two congenital anomalies: a gastric duplication cyst and dorsal pancreatic agenesis. (Korean J Med 76:203-208, 2009)
성재동(Jae-Dong Seong),김해동(Hae-Dong Kim),임성민(Seong-Min Lim) 한국항공우주학회 2013 韓國航空宇宙學會誌 Vol.41 No.2
우주파편과의 위험성을 판단하는데 가장 보편적으로 사용되는 것이 충돌확률이며, 현재 널리 사용되고 있는 방법은 최근접거리를 이용한 2차원 선형 충돌확률 계산방법이다. 본 논문에서는 우리나라가 운용하거나 운용을 계획 중인 아리랑 2호, 3호, 5호 위성에 접근하는 물체의 접근 특성을 분석하고, 2차원 선형 충돌확률보다 더 정밀한 3차원 비선형 충돌확률의 특성을 STK/Nonlinear Collision Probability Tool을 이용하여 분석하였다. 이를 통해 저궤도 위성인 아리랑 위성들에 대해 3차원 비선형 충돌확률의 효용성에 대해 고찰하였다. 분석결과 3차원 비선형 충돌확률은 350m/s 이하의 상대속도 영역에서 효용성이 있음을 확인하였으며, 우리나라 위성의 경우 낮은 상대속도를 가지고 접근하는 경우가 거의 없는 것으로 나타나 실질적으로 3차원 비선형 충돌확률에 대한 효용성이 낮은 것으로 나타났다. Collision probability is the most common method to measure the risk of space debris, it is widely used that two dimensional linear collision probability using the closest approach distance. This paper represents the characteristics of object that approach KOMPSAT 2, 3, 5 that have operated or will be operated by Korea. And more precise method than two dimensional linear collision probability, we analyzed the properties of three dimensional nonlinear collision probability using STK/Nonlinear Collision Probability Tool. Through this, efficiency of three dimensional nonlinear collision probability for KOMPSAT series satellites was investigated. The result represents that three dimensional nonlinear collision probability showed the precise outcome at a relative velocity of less than 350m/s. Also, KOMPSAT series satellites appeared to few low relative velocity approaches and showed low efficiency for the three dimensional nonlinear collision probability.
정인범 ( In Beom Jeong ),이태희 ( Tae Hee Lee ),임성민 ( Seong Min Lim ),류기현 ( Ki Hyun Ryu ),김용석 ( Yong Seok Kim ),김선문 ( Sun Moon Kim ),임의혁 ( Euyi Hyeog Im ),허규찬 ( Kyu Chan Huh ),최용우 ( Young Woo Choi ),강영우 ( Y 대한소화기학회 2011 대한소화기학회지 Vol.58 No.6
Background/Aims: The endoscopic findings and clinical relevance of portal hypertensive colopathy are not well described in Korea. We aimed to do a retrospective study of mucosal changes in the colon of patients with liver cirrhosis and to find their association with clinical characteristics. Methods: We reviewed the clinical data and endoscopic findings of 48 patients with liver cirrhosis and 48 patients, matched for age and sex, with irritable bowel disease (IBS) who underwent colonoscopy over a 5 year span. Results: Patients with liver cirrhosis were more likely to have colitis-like lesions and vascular abnormalities than IBS patients. Low platelet count (p=0.005) and severe esophageal varices (p=0.011) were associated with portal hypertensive colopathy, whereas the etiologies and severity of cirrhosis were not associated with these findings. Conclusions: Portal hypertensive colopathy can be defined with colitis-like lesions or vascular lesions. These lesions are more frequently present in patients with more severe esophageal varices and thrombocytopenia. (Korean J Gastroenterol 2011;58:332-337)