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Pulmonary Inflammatory Pseudotumor with Solitary Plasmacytoma of Bone Mimicking Advanced Lung Cancer
( Chang Hoon Kim ),( Jae Seok Jeong ),( Yong Chul Lee ),( So Ri Kim ),( Yeong Hun Choe ),( Seung Yong Park ) 대한결핵 및 호흡기학회 2020 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.128 No.-
Lung cancer has been the most commonly diagnosed type of cancer and the leading cause of cancer related mortality in Korea and worldwide. Although it is fatal, most of the lung cancer patient are asymptomatic at the time of diagnosis. Therefore, radiologic screening by chest low-dose computerized tomography (LDCT) has been recommended by lung cancer specialists for early detection and improving survival. However, clinical suspicion of lung cancer by radiologic screening is quite challenging because of its high false positive rate. A wide range of benign pulmonary diseases could be misinterpreted as lung malignancy on LDCT, including infection, benign mass-forming lesion, and inflammatory changes. Therefore, physician should consider the possibility of the benign disease entities when radiologic features suggest lung malignancy. Herein, we report a case of a 50-year-old man presenting a 4.5-cm lung mass in the right upper lobe with solitary osteolytic lesion of the right 8th rib. Under the suspicion of metastatic lung cancer, the lung mass and the right 8th rib were surgically resected for the diagnostic and curative purpose. After the tissue biopsy, unexpectedly, the lung mass was diagnosed as inflammatory pseudotumor. Furthermore, histopathology of the resected rib showed solitary plasmacytoma of the bone. Our experience highlights the importance of clinical suspicion that in patients with radiologic features compatible to advanced lung cancer could be caused by coexistence of unrelated two uncommon disease entities, which can be completely treatable with surgical resection.
일방향응고 초내열합금 CM186LC의 크리프 및 저주기피로 균열생성
趙昌龍,金豆炫,崔承柱,徐晟文,李在鉉 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1
The second generation DS alloy CM186LC has comparable creep-rupture life to first generation single crystal alloys CMSX-2 and CMSX-3 in the as-cast and double aged condition. In the assembly of nozzle guide vanes, Ds components are joined into pairs by brazing. In order to study mechanical behavior of the material at the same condition as production, DS bars were subjected to brazing simulated treatments. Compared with standard treatment a small drop in creep-rupture life was observed but the degree of fall in life was not serious. Creep cracks initiated at the transverse components of the grain boundaries, which were normal to the applied stress direction. Every crack was associated with the v-v' eutectic phase at grain boundaries v-v' eutectic was not only located at grain boundaries but also in the interdendritic regions. It also acted as crack initiation site during creep. Low cycle fatigue tests were conducted under fully reversed trapezoidal strain wave at a frequency of 0.25Hz. The depth of the LCF cracks at the surface was comparable to that of the secondary dendrite arms from the surf-ace of the specimen. Cracks initiated at all of the interdendritic regions exposed at the surface, especially at the v-v' eutectic phase. LCF crack initiation and propagation are therefore proposed to be microstructally dependent.
일부 다빈도 입원 및 수술례에서 항생제 사용의 의료기관별 처방실태와 적정성에 관한 연구
신영수,김용익,이영성,김창엽,최강원,이환종 대한감염학회 1992 감염 Vol.24 No.4
The purpose of this study is to probe the patterns of antibiotic prescriptions among the hospitals in Korea; such as drug cost, prescription rate, duration and appropriateness. Five clinical cases which are Cesarean section, appendectomy, cholecystectomy, cataract extraction, and pediatric pneumonia, were selected for this study. The selected clinical cases were sampled from the medical insurance claim bills (total 2,136 cases) and medical records(total 414 cases). The prescribing variation of the hospitals (total 70) were analysed as the frame of hospital bed size (tertiary hospital, general hospital (A, B), hospital) and their ownership (public tertiary, private tertiary, public general, private general private). The results are as follows; 1) The consumption pattern, proportion of antibiotics in total drug cost, showed significant difference among hospital groups. For example, the proportion of antibiotic cost in pediatric pneumonia was highest hospital group A(28.1%). 2) The prescription rate of general antibiotics ranged from 96.5% to 100%. For the reserved antibiotics, The rate was 74.7% in cataract extraction, 66.5% in Cesarean section, 62.6% in cholecystectomy, 51.6% in appendectomy and 42.0% in pediatric pneumonia. The rate also varied significantly among hospitals. The variation of inter-hospital groups was highest in pediatric pneumonia. The general hospital B and the private tertiary hospital groups prescribed the reserved antibiotics more frequently. 3) In all cases, the average duration of antibiotic administration was more than five days, which was differ little from average length of stay (ALOS) of each cases. For example, the mean durations of Cesarean section and cholecystectomy were 6.9 and 14.3 days respectively, while the ALOS of this cases were 8.8 and 15.7 days. Most of the prescribed antibiotics were not therapeutic, but prophylactic. 4) Considering the principles of prescribing prophylactic antibotics, these findings on the pattern of antibiotic prescription, especially on the aspects of prescription rate, duration, and its variation among the hospitals have particular significance for the quality of hospital care. The results of this study imply a strong probability of antibiotic over-utilization, which lead to the following perspectives. First, well designed further research on this topic should be followed, including analysis of behavioral factors affecting the drug prescription. Second, it is necessary to develop quality improvement programs such as drug utilization review for the proper and efficient use of antibiotics.
김나영,이동호,송인성,김용일,김우호,최규완,이국래,최기영,장미수 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.2
Background/Aims: The aims of this study are to clarify the morphology of fundic gland polyp (FGP) and to compare the features of FGP between familial adenomatous polyposis-associated group and sporadic development group. Methods: A total of 15 endo- scopic biopsy specimens of FGP from 13 patients were divided into three groups; Group A(3 cases; familial adenomatous polyposis family, multiple FGPs), Group B(3 cases; sporadic development, multiple FGPs) and Group C(7 cases; sporadic development, single FGP), and their endoseopic /microscopic features including mucin histochemistry and immunohistoc- hemistty(for PCNA) were compared. Results: FGPs were confined to the gastric body and fundus in all 3 groups, and measured 2-8 mm. Their numbers varied even in Group A and Group B, The difference was observed in their median age: 26 years in Group A and 55 years in Group B, respectively, but there were no differences in endoscopic, histologic, mucin histochemical and immunohistochemical(for PCNA) features. Micro-scopically, all FGPs were composed of fundic glands and scattered microcysts with a spectrum of disordered glandular architecture which ranged from convoluted gland to Y-shaped gland, to stellateshaped gland, and to irregular tortuous glancl with dilated lumen. Conclusions: We assume that diversity af morphologic features of FGP may develop from progression of hyperplastic/hamartomatous fundic glandular proliferation which may end up with microcyst formation as an evolutional change. Familial adenomatous polyosis-associated FGPs were not endoscopically and histologically distingishable from sporadic deveoped FGPs.
Systemic Sclerosis Sine Scleroderma
김채기 ( Chae Gi Kim ),류헌모 ( Hun Mo Rhoo ),권중구 ( Joong Goo Kwon ),이창형 ( Chang Hyeong Lee ),송용호 ( Yong Ho Song ),최정윤 ( Jung Yoon Choe ) 대한류마티스학회 2000 대한류마티스학회지 Vol.7 No.3
Systemic sclerosis (SSc) is a generalized connective tissue disorder of unknown etiology. Clinically, there is a broad spectrum of disease ranging from widespread severe skin thickening to skin thickening limited to the distal extremities. In rare cases of systemic sclerosis, no cutaneous change only with internal organ involvement has been reported, which is called `systemic sclerosis sine scleroderma (ssSSc)`. We describe a patient with Raynaud`s phenomenon, who showed intestinal pseudoobstruction as a presenting symptom but did not show any skin change. She had also an esophageal motility disorder, but other organ involvement was not evident. Antinuclear antibody was positive. Her obstruction symptoms were improved by decompression by nasogastric tube and pharmaceutical treatment with erythromycin and octreotide.
Choe, Chang-Yong,Kim, Jung-Gon,Cho, Sang-Rae,Son, Dong-Soo,Kim, Young-Keun,Balasubramanian, S,Choe, Sang-Yong,Rho, Gyu-Jin Blackwell Verlag GmbH 2006 Reproduction in domestic animals Vol.41 No.1
<P>Contents</P><P>The success of AI technology is based on both semen quality and freezing process. In order to establish the semen freezing techniques in Korean native bucks, factors affecting the success were evaluated in the present study. Semen collected by electro-ejaculation from bucks during four distinct seasons was evaluated for semen volume and pH, sperm motility and survivability. The semen volume, concentration and total cell were higher in spring, summer and less in winter. Yet, there were no seasonal differences in the proportional data of live sperm, motility score and pH of semen among seasons. The percentage of live sperm after thawing was found to increase with increased concentration of lactose in Tris-Egg yolk-glycerol (TY-G), being highest in TY-G supplemented with 180 m<SMALL>M</SMALL> lactose (TYL180-G), but did not differ between TY-G and TYL120-G. Sperm motility was enhanced by employing 2.0 h equilibration time with rapid freezing method. In conclusion, semen could be frozen with high success rates for further use of AI in breeding techniques and to preserve the Korean native bucks.</P>