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조영윤,Young Hwan Choi,Su Jong Yu,Eun Ju Cho,Jeong-Hoon Lee,Yoon Jun Kim,Jung-Hwan Yoon 대한간암학회 2019 대한간암학회지 Vol.19 No.2
Background/Aims: Tenofovir disoproxil fumarate (TDF) is potentially nephrotoxic in chronic hepatitis B patients. Hepatocellular carcinoma (HCC) patients treated using transarterial chemoembolization (TACE) are at an increased risk of renal injury. The aim of this study was to determine whether TDF is associated with more renal adverse events than entecavir (ETV) in HCC patients treated with TACE. Methods: In this retrospective single-center study, we selected 53 HCC patients who were treated with TDF from January 2012 to July 2013 and had their first TACE procedure in the same period. These patients were matched by age and sex to patients treated with ETV. Results: There were no significant differences in baseline characteristics, including HCC factors, and nephrotoxic drug use, between the two groups. The median follow-up period was 17.0 and 20.0 months for the TDF and ETV groups, respectively. There was no difference during the follow-up period between the TDF and ETV groups in the increase in creatinine over 0.5 mg/dL (17.0% and 17.0%, P=1.00, respectively) and the decrease in eGFR over 25% (43.4% and 41.5%, P=0.84, respectively). Multivariate analysis revealed that Child-Pugh class over B (hazard ratio [HR], 7.30; 95% confidence interval [CI] 2.79-19.10; P<0.01) was associated with increase in creatinine, and Child-Pugh class over B (HR, 82.74; 95% CI 12.31-555.83; P<0.01) and Barcelona-Clinic Liver Cancer stage over B (HR, 14.93; 95% CI 1.60-139.51; P=0.02) were associated with decrease in eGFR. Conclusions: TDF has comparable safety to that of ETV for HCC patients undergoing TACE.
내시경역행담췌관조영술과 간동맥내 화학요법 후 소실된 담관내 간세포암 1예
조영윤 ( Young Youn Cho ),이상협 ( Sang Hyub Lee ),이재우 ( Jae Woo Lee ),박진명 ( Jin Myung Park ),류지곤 ( Ji Kon Ryu ),김용태 ( Yong Tae Kim ),윤창진 ( Chang Jin Yoon ),김혜령 ( Haer Young Kim ) 대한소화기학회 2014 대한소화기학회지 Vol.63 No.5
Invasion of the bile duct by hepatocellular carcinoma (HCC), which is called intrahepatic bile duct HCC, is rare and has a poor prognosis. Early diagnosis and surgical resection is important for treatment. A 58-year-old man who underwent hepatic resection for HCC 4 years ago and received transarterial chemoembolization (TACE) 2 years after the operation for recurred HCC presented with jaundice. CT scan revealed a tumor in the common bile duct without intrahepatic lesion. Therefore, ERCP was done to perform biopsy and biliary drainage. Histological examination was compatible with hepatocellular carcinoma. However, the tumor could not be visualized at angiography and thus, only transarterial chemoinfusion was performed without embolization. The tumor had disappeared on follow-up CT scan, and the patient has been disease free for 23 months without evidence of recurrence. Herein, we report a case of intrahepatic bile duct HCC which disappeared after ERCP.
근치적인 수술 이후 조기 재발하였으나 서로 다른 예후를 보인 간세포암종 2예
조영윤 ( Young Youn Cho ),이정훈 ( Jeong Hoon Lee ),이남준 ( Nam Joon Yi ),이광웅 ( Kwang Woong Lee ),서경석 ( Kyung Suk Suh ),김윤준 ( Yoon Jun Kim ),윤정환 ( Jung Hwan Yoon ) 대한간암학회 2015 대한간암학회지 Vol.15 No.2
Hepatocellular carcinoma (HCC) has poor prognosis, even after curative resection. Earlyrecurrence after curative treatment is a major cause of the poor prognosis. Pathologic factors such as vessel invasion, satellite nodule, size of tumor and pathologic grade are prognostic factors predicting early recurrence and poor prognosis. We share our experience of two cases which both showed early recurrence after curative hepatic resection, but eventually demonstrated different prognosis. Since the most common cause of death after potentially curative treatment is tumor recurrence, suppression of tumor recurrence might be linked to survival gain. Currently, there is no adjuvant therapy for HCC endorsed by international guidelines. However, recent studies have shown that antiviral treatment for hepatitis B virusrelated HCC and immunotherapy using autologous cytokine-induced killer cell reduced HCC recurrence. Further study is needed to select patients who will benefit from adjuvant treatments. (J Liver Cancer 2015;15:126-131)
간 절제술 후 반복적인 복막 재발을 보인 간세포암종 환자에서 수술 절제로 완치된 1예
이효영 ( Hyo Young Lee ),이정훈 ( Jeong-hoon Lee ),남준열 ( Joon Yeul Nam ),장영 ( Young Chang ),조혜기 ( Hyeki Cho ),조영윤 ( Young Youn Cho ),조은주 ( Eun Ju Cho ),유수종 ( Su Jong Yu ),김윤준 ( Yoon Jun Kim ),윤정환 ( Jung-hwa 대한간암학회 2017 대한간암학회지 Vol.17 No.2
Recurrence of hepatocellular carcinoma (HCC) after hepatic resection is quite common. Peritoneal recurrence has been considered incurable status and related to poor prognosis. Although peritoneal metastasectomy is a therapeutic option for some selected patients with a few peritoneal metastasis, the indication and therapeutic effect has not been clear. We report a case of a 61-year-old man achieving complete remission of recurrent peritoneal metastasis after repeated surgical resection by a multidisciplinary approach. Peritoneal metastasectomy might be a therapeutic option for selected patients with localized oligonodular peritoneal metastasis. (J Liver Cancer 2017;17:153-157)
AWGN 환경에서의 UHF RFID Reader 시스템의 태그 인식 성능 개선을 위한 에러 정정 기법
조영윤(Young Yoon Joe),전기용(Ki Yong Jeon),조성호(Sung Ho Cho) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
Radio frequency identification(RFID) system is getting more and more attention as researchers considering to use the UHF RFID tags in ubiquitous system environment for its high performance such as greater read/write range and high read rate. For high performance, we proposed a technique of the error correction in the return link. In this paper, we present the method to improve the identification rate of RFID tags. By simulation, the results applied error correction method with anti-collision algorithm are shown and compare without error correction process in AWGN environment.
이재우 ( Jae Woo Lee ),이상협 ( Sang Hyub Lee ),조영윤 ( Young Yoon Cho ),오수연 ( Soo Yeon Oh ),음영욱 ( Young Ook Eum ),한호성 ( Ho Seong Han ),김혜령 ( Hae Ryoung Kim ),김영훈 ( Young Hoon Kim ) 대한췌담도학회 2013 대한췌담도학회지 Vol.18 No.4
담낭신경내분비종은 드물게 발생하는 일차성 담낭암이며, 전산화단층촬영이나 초음파와 같은 통상적인 영상검사로 쉽게 발견되지 않는다. 석회화담낭 역시 드물기 때문에석회화담낭을 동반하는 신경내분비종은 매우 희귀하다. 명치부위 통증을 주소로 내원한 75세 여자환자가 전산화단 층촬영에서 석회화담낭과 다엽성 종괴가 발견되어 확대 담낭절제술을 시행하였고, 최종 병리소견으로 담낭신경내분 비종과 석회화담낭이 확진되었다. 석회화담낭을 동반하는 담낭신경내분비종은 이전에 보고된 바 없기에 저자들은 이 를 문헌고찰과 함께 보고하는 바이다. Gallbladder neuroendocrine tumor (NET) is a rare cause of primary gallbladder carcinoma, and cannot be easily detected by conventional radiologic study such as computed tomography (CT) or sonography. Porcelain gallbladder is also rare. Therefore, gallbladder NET accompanying porcelain gallbladder is very rare. We report here on a 75-year-old woman with gallbladder NET accompanying porcelain gallbladder, abdominal CT showed a porcelain gallbladder with a multilobulated mass lesion invading liver segment 8. Extended cholecystectomy was performed and the microscopic features of the resected specimen confirmed the diagnosis of gallbladder NET and porcelain gallbladder. Gallbladder NET accompanying porcelain gallbladder has not been reported. We report on this unusual case along with a review of the relevant literature.
曺永允 新羅大學校 1982 論文集 Vol.12 No.-
The elements that make up music can be classifed in to many field. But, of all the elements, the most significant one is scale system. scale system means this range system that is arranged step by step withing the octave. And the scale system differs from people to people, and time to time. In this article, the followings have been studied according to their historic background. a. Greece tetrachord & mode b. Church mode c. Hexachord d. Seven-tone scale e. Chromatic scale f. Pentatonic scale h. Nine-tone scale i. Octatonic scale j. Scriabin's mystic scale k. Blue note scale l. Korean's scale m. Twelve-tone scale n. Micro-tone scale As is noted above, the scale system has been continuously changed and modulated from the old era to the modern days. These changes are closely related to the changes in general culture, and there are growing discussins on the new scale system among musicologists and phonologists. Because the scale in the new system necessarily means something artifical, this phenomenon has sufficient resons for its validity. And the modern composers tend to apply their musical compositions to a more complicated and enlarged scale system.. Such examples are mentioned in chapterⅡ. Therefore, the future scale system will certainly be futher classified then our present 7 tone scale or 12 tone scale. In this light, korean musicologists should make more strenuous efforts on the study of our own scale system fhat can de recognized on an international level.