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Nasal Deformity Due to Tuberculous Chondritis
문수연,이정아,정미경,정두련,송재훈,백경란 대한이비인후과학회 2014 Clinical and Experimental Otorhinolaryngology Vol.7 No.3
Tuberculosis (TB) is a common disease worldwide. However, nasal TB is quite rare, and the diagnosis of nasal TB requires a high index of suspicion. The most common symptoms of this unusual presentation are nasal obstruction and nasal dis- charge. We present a case of nasal TB with involvement of the hard palate presenting with a chronically progressive nasal deformity and ulceration of the hard palate. A biopsy confirmed the diagnosis, and medication for TB was started and the lesions resolved. When a patient presents with chronic ulcerative lesions that do not respond to antibiotic treatment, TB should be included in the differential diagnosis. Biopsy of the lesion can aid in the confirmation of the diagnosis.
문수연,최영실,박미연,이정아,정혜숙,정두련,송재훈,백경란,정미경 대한감염학회 2009 Infection and Chemotherapy Vol.41 No.3
Q fever is a zoonosis caused by Coxiella burnetii, presenting as acute and chronic illness and it has been reported worldwide. Acute Q fever is usually asymptomatic or mild and self-limiting, but infective endocarditis is one of the most serious complications of chronic Q fever and can be fatal. Known risk factors for Q fever endocarditis are valvular heart disease, immunocompromised hosts, and pregnancy. There have been some reports on Q fever in Korea but there exists no report on Q fever endocarditis. We have experienced 2 cases of Q fever with underlying valvular heart disease; both patients came to the hospital for evaluation of prolonged fever. Although Q fever and Q fever endocarditis are rare in Korea, Q fever endocarditis should be considered in the differential diagnosis of patient with infective endocarditis when causative microorganism cannot be identified.
문수연,장영운,이창균,장재영,동석호,김효종,김병호,장린 대한소화기내시경학회 2007 Clinical Endoscopy Vol.34 No.4
Gastric schwannoma that originates from nerve sheath comprises about 0.2% of all gastric tumors and 4% of all benign gastric tumors. It is difficult to precisely diagnose gastric schwannoma via endoscopic biopsy or imaging studies. A 57-year-old male was referred to our hospital from a private clinic for further evaluation of a gastric tumor-mass that was diagnosed by gastroscopy. Gastroscopy and endoscopic ultrasonography showed a submucosal mass larger than 3 cm in size at the low body of the stomach. That the mass had malignant potential could not be excluded because of its size and shape. The patient underwent subtotal gastrectomy. The tumor cells showed immunoreactivity to S-100 protein. This submucosal tumor was diagnosed as a gastric schwannoma on the basis of these findings. Gastric schwannoma is known to occur more frequently in females than males. This is the first reported case of gastric schwannoma that's occurred in a Korean male patient. (Korean J Gastrointest Endosc 2007;34:210-213) 신경초에서 기원하는 위 신경초종은 전체 위 종양의 0.2% 정도이고, 양성 위 종양의 4%를 차지한다. 대부분 점막하에서 발생하므로 내시경 조직검사나 영상검사만으로는 위 신경초종을 정확히 진단하기는 어렵다. 57세 남자 환자가 개인의원에서 시행한 상부위장관내시경검사에서 발견된 위 종괴에 대한 자세한 검사를 위해 전원되었다. 상부위장관내시경검사 및 내시경초음파검사에서 위체하부에 3 cm 이상의 점막하 종양이 있었다. 크기가 3 cm 이상으로 크며, 점막하 종양은 내시경 조직검사로 악성 여부를 확인할 수 없어 위부분전제술을 하였고 조직검사에서 종양 세포는 S-100 염색에 양성 반응이었으며 위 신경초종으로 진단하였다. 위 신경초종은 여성에서 더 흔한 것으로 알려져 있으나, 본 증례는 국내에서 처음으로 남성에서 발견한 위 신경초종으로 보고한다.
문수연,신준범,김경엽,김석연,문수영,문송미,이미숙 대한감염학회 2007 감염과 화학요법 Vol.39 No.5
저자들은 특별한 위험 인자 없이 심한 허리 및 왼쪽 둔부 통증으로 내원하여 황색포도알균에 의한 균혈증이 진단된 젊은 여성에서 드문 감염질환인 화농성 천골장골관절염과 엉덩근 및 엉덩허리근 농양이 발생된 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Pyogenic sacroiliits is a rare disease and the diagnosis is difficult because of unawareness of the disease and nonspecific symptoms and signs mimicking septic hip, iliopsoas muscle abscess and herniation of intervertebral disk. There are some predisposing factors related to the disease like trauma, pregnancy, intravenous drug abuse and infection of other systems such as skin, genitourinary system and heart. Staphylococcus aureus is the most common causative bacteria. Here we describe a case of 27-year-old woman presented with acute onset of back and left buttock pain. Bone scintigraphy revealed increased uptake at left sacroiliac joint and computed tomography of the pelvis showed left sacroiliitis with left iliacus and iliopsoas abscess. There was no history of usual predisposing conditions. S. aureus was grown from blood cultures and the patient improved with 2 weeks of intravenous cefazolin followed by 4 weeks of oral clindamycin treatment.
이상 고수온에 반응하는 이매패류 참굴(Crassostrea gigas)의 패각운동을 활용한 생물모니터링시스템 연구
문수연,오석진,김대현,윤양호 해양환경안전학회 2017 海洋環境安全學會誌 Vol.23 No.1
이상 고수온을 감지하기 위한 생물모니터링 시스템(BMS) 연구를 위해, 4단계의 수온(5, 10, 20와 30℃)에서 참굴 패각운동을 측정하였다. 모든 참굴은 실험시작 전에 3일 동안 절식을 통하여, 먹이섭이 및 배출에 따른 패각운동의 요인을 제거하였다. 5℃ 실험구에서는 패각운동이 관찰되지 않았지만, 수온의 증가와 함께 패각운동은 증가하였다(10℃ : 6.31±2.18 times/hr, 20℃ : 22.0±10.0 times/hr). 30℃에서는 5℃와 같이 패각운동이 전혀 보이지 않았던 실험구와 20℃와 유사한 패각운동이 실험구가 나타났다. 이는 30℃ 이상에서도 20℃와 같은 신진대사를 보이는 개체군이 있었으나, 대부분이 신진대사의 활력의 감소에 기인하여 폐각상태가 지속되는 것으로 나타났다. 따라서 참굴 양식장에 고수온 감지를 위한 참굴 패각운동 BMS를 설치한다면, 경계단계는 빠른 패각운동(약 30.0회/hr 이상)일 때, 심각단계는 수시간 이상 폐각상태일 때, 조기경보(early warning)를 내릴 수 있을 것이다. 따라서 참굴 패각운동을 활용한 BMS는 이상고수온의 조기경보에 대하여 효과적으로 활용이 가능할 것으로 판단된다. This study contains research on a bio-monitoring system (BMS) capable of detecting abnormal high water temperatures, the shell valve movements (SVMs) of Pacific oysters (Crassostrea gigas), which were measured at four different temperature (5, 10, 20 and 30℃) under laboratory conditions. All the Pacific oysters were kept under fasting conditions for 3 days to prevent the influence of food and excretions before the onset of the experiments. SVMs did not detect at 5℃. However, SVMs increased with an increase in temperature (at 10℃ : 6.31±2.18 times/hr and at 20℃ : 22.0±10.0 times/hr). At 30℃, SVMs were divided into two groups: those with no SVMs as at 5℃ and those with SVMs similar to conditions at 20℃ (23.9±9.35 times/hr). This indicates oyster shells maintain a closed condition due to a decrease in metabolism at 30℃, although some Pacific oysters had active SVMs due to an increase in metabolism. If a BMS using the SVM status of Pacific oysters was installed to monitor abnormal high water around oyster farms, early warning levels and serious alerts might be made available more rapidly for SVMs of more than ca. 30 times/hr and closing conditions in a matter of hours, respectively. Therefore, a BMS using the SVMs of Pacific oysters might be an effective early warning system for abnormal high water temperatures.
고속 흐름에서의 충격파와 난류경계층의 상호작용에 관한 수치적 연구
문수연,손창현,이충원,Mun, Su-Yeon,Son, Chang-Hyeon,Lee, Chung-Won 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.3
A study of the shock wave turbulent boundary layer interaction is presented. The focus of the study is the interactions of the shock waves with the turbulent boundary layer on the falt plate. Three examples are investigated. The computations are performed, using mixed explicit-implicit generalized Galerkin finite element method. The linear equations at each time step are solved by a preconditioned GMRES algorithm. Numerical results indicate that the implicit scheme converges to the asymptotic steady state much faster than the explicit counterpart. The computed surface pressures and skin friction coefficients display good agreement with experimental data. The flowfield manifests a complex shock wave system and a pair of counter-rotating vortices.