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대한소화기내시경학회> Clinical Endoscopy

Clinical Endoscopy update

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  • : 대한소화기내시경학회지(~2011)→Clinical Endoscopy(2012~)

수록정보
수록범위 : 44권1호(2011)~52권4호(2019) |수록논문 수 : 880
Clinical Endoscopy
52권4호(2019년 07월) 수록논문
최근 권호 논문
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KCI등재 SCOPUS

1Unfortunately, a “Back Light System” As a Global Positioning System Failed to Guide the Route in 25-G Fine-Needle Aspiration

저자 : Rungsun Rerknimitr , Phonthep Angsuwatcharakon

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 295-296 (2 pages)

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KCI등재 SCOPUS

2Endoscopic Ultrasound-Guided Liver Biopsies: Is the Future Here Yet?

저자 : Ihab I. El Hajj , Mohammad Al-haddad

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 297-298 (2 pages)

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3Endoscopic Ultrasound-Guided Drainage of Peripancreatic Fluid Collections

저자 : Eun Young Kim , Robert H. Hawes

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 299-300 (2 pages)

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4Current Status of Endoscopic Ultrasonography in Gastrointestinal Subepithelial Tumors

저자 : Sang Gyun Kim , Ji Hyun Song , Joo Ha Hwang

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 301-305 (5 pages)

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Gastrointestinal subepithelial tumors (GSTs) are usually detected incidentally on endoscopic or radiologic examinations. In conventional endoscopy, a GST usually presents as a protuberant lesion with an intact mucosal surface. As the lesion is located beneath the mucosal layer of the gastrointestinal tract, conventional biopsy typically does not reveal the pathologic diagnosis. First, a GST should be differentiated from an extrinsic compression through the positional change of the patient during conventional endoscopic examination. In cases of GSTs originating from the gastrointestinal wall, endoscopic ultrasonography (EUS) can be beneficial for narrowing the differential diagnosis through delineation of echo findings and by determining the layer of origin. EUS findings can also help determine the management strategies for GSTs by making a differential diagnosis according to malignant potential. Clin Endosc 2019;52:301-305

KCI등재 SCOPUS

5Contrast Enhanced Endoscopic Ultrasound Imaging for Gastrointestinal Subepithelial Tumors

저자 : Takashi Tamura , Masayuki Kitano

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 306-313 (8 pages)

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Subepithelial tumors are divided into benign subepithelial and potentially malignant gastrointestinal stromal tumors. It is difficult to distinguish between these tumor types. Contrast-enhanced harmonic endoscopic ultrasound is reportedly useful for diagnosing subepithelial tumors, can be safely and easily performed by understanding the principle and method, and can be used to distinguish between tumor types with high sensitivity on the basis of differences in contrast effect. The generated image shows a hyper-enhancement pattern in gastrointestinal stromal tumors (sensitivity, 78%-100%; specificity, 60%-100%; accuracy, 60%-100%) and hypo-enhancement pattern in benign subepithelial tumors. Contrast-enhanced harmonic endoscopic ultrasound can be used to estimate the malignancy potential of gastrointestinal stromal tumors by evaluating the uniformity of the contrast and the blood vessels inside the tumor, with abnormal intra-tumor blood vessels, heterogeneous enhancement, and non-enhancing spots suggesting malignancy. Contrast-enhanced harmonic endoscopic ultrasound has a higher sensitivity than other imaging modalities for the detection of vascularity within gastrointestinal stromal tumors. Additionally, it has been reported that treatment effects can be estimated by evaluating the blood flow in the gastrointestinal stromal tumor before and after treatment with tyrosine kinase inhibitors using contrast-enhanced ultrasound. However, there will be subjective-bias and the results depends on the performer's skill. Clin Endosc 2019;52:306-313

KCI등재 SCOPUS

6Endoscopic Ultrasound-Guided Fine Needle Aspiration and Biopsy in Gastrointestinal Subepithelial Tumors

저자 : Gyu Young Pih , Do Hoon Kim

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 314-320 (7 pages)

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The incidence of asymptomatic and incidentally found upper gastrointestinal subepithelial tumors (SETs) is increasing with the implementation of national cancer screening and the development of high-resolution endoscopy in Korea. However, endoscopy alone cannot be used to determine whether SETs are benign or malignant. Endoscopic ultrasound (EUS) is used to further characterize these lesions through the examination of their layered structure, internal echogenicity, size, and relationship to the extramural structure. These provide additional information on whether the lesion is benign or malignant. Nevertheless, the sensitivity and specificity of EUS alone in predicting malignancy is unsatisfactory. Recent guidelines have recommended deciding the timing of EUS-fine needle aspiration and biopsy (EUS-FNA/B) for SETs based on tumor size, malignant features on endoscopy, and high-risk features on EUS. The diagnostic accuracy of EUS-FNA/B is reportedly influenced by factors including needle size, number of needle passes, use of suction, use of a stylet in the needle assembly, fanning technique, availability of an on-site cytopathologist, and experience of the endosonographer. Therefore, according to the characteristics of the SETs, various subsequent methods and techniques should be appropriately employed to improve the diagnostic yield of EUS-FNA/B. Clin Endosc 2019;52:314-320

KCI등재 SCOPUS

7Assessment of Endoscopic Gastric Atrophy according to the Kimura-Takemoto Classification and Its Potential Application in Daily Practice

저자 : Duc Trong Quach , Toru Hiyama

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 321-327 (7 pages)

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The assessment of endoscopic gastric atrophy (EGA) according to the Kimura-Takemoto classification has been reported to correlate well with histological assessment. Although agreement among beginner endoscopists was less than that among experienced endoscopists, it has been shown that agreement level could markedly improve and remained stable after proper training. Several cohort studies have consistently shown that the severity of EGA at baseline is significantly associated with the presence of advanced precancerous gastric lesions and gastric cancer, as well as the development of gastric cancer in future. Patients with moderate-to-severe EGA still have high risk of gastric cancer even after successful Helicobacter pylori eradication and should be candidates for gastric cancer surveillance. The assessment of EGA, therefore, could be used as a preliminary tool to identify individuals at high risk for gastric cancer. In this paper, we review the agreement on mucosal atrophy assessment between the Kimura-Takemoto classification and histology as well as the potential application of this endoscopic classification to identify precancerous gastric lesions and gastric cancer in daily practice. Clin Endosc 2019;52:321-327

KCI등재 SCOPUS

8Recent Development of Computer Vision Technology to Improve Capsule Endoscopy

저자 : Junseok Park , Youngbae Hwang , Ju-hong Yoon , Min-gyu Park , Jungho Kim , Yun Jeong Lim , Hoon Jai Chun

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 328-333 (6 pages)

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Capsule endoscopy (CE) is a preferred diagnostic method for analyzing small bowel diseases. However, capsule endoscopes capture a sparse number of images because of their mechanical limitations. Post-procedural management using computational methods can enhance image quality. Additional information, including depth, can be obtained by using recently developed computer vision techniques. It is possible to measure the size of lesions and track the trajectory of capsule endoscopes using the computer vision technology, without requiring additional equipment. Moreover, the computational analysis of CE images can help detect lesions more accurately within a shorter time. Newly introduced deep leaning-based methods have shown more remarkable results over traditional computerized approaches. A large-scale standard dataset should be prepared to develop an optimal algorithms for improving the diagnostic yield of CE. The close collaboration between information technology and medical professionals is needed. Clin Endosc 2019;52:328-333

KCI등재 SCOPUS

9A “Back Light System” for Identification of Sites for Endoscopic Ultrasound-Guided Fine-Needle Aspiration in Solid Pancreatic Masses: A Prospective, Randomized Study with a Crossover Design

저자 : Ryo Harada , Hironari Kato , Soichiro Fushimi , Hirofumi Inoue , Daisuke Uchida , Yutaka Akimoto , Takeshi Tomoda , Kazuyuki Matsumoto , Yasuhiro Noma , Naoki Yamamoto , Shigeru Horiguchi , Koichiro Tsutsumi

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 334-339 (6 pages)

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Background/Aims: We applied a back light system (BLS) with a magnifying glass to improve the ability to assess the adequacy of specimen sampling using endosonography. We conducted this study to evaluate the efficacy of the BLS in sampling of specimens by endoscopic ultrasound-guided fine needle aspiration of solid pancreatic masses.
Methods: This was a prospective, randomized, crossover, single-center clinical trial. An endosonographer evaluated adequacy on gross visual inspection and identified whitish specimen sampling sites with and without the BLS according to a randomization sequence in the first and second passes with a 25-G needle. On cytological evaluation, the presence of well-defined pancreatic ductal epithelium was evaluated by a cytopathologist who was blinded to any clinical information.
Results: A total of 80 consecutive patients were eligible during the study period. Adequacy was observed for 52 specimens (65%) with the BLS and 54 (68%) without the BLS (p=0.88). In assessment of specimen adequacy on gross examination, only fair agreement was observed both with and without BLS (kappa score 0.40 and 0.29, respectively).
Conclusions: The BLS did not influence the ability to identify specimen sampling sites or reliable assessment of specimen site adequacy using gross visual inspection. Clin Endosc 2019;52:334-339

KCI등재 SCOPUS

10Endoscopic Ultrasound-Guided Liver Biopsy Using a Core Needle for Hepatic Solid Mass

저자 : Hyung Ku Chon , Hee Chan Yang , Keum Ha Choi , Tae Hyeon Kim

발행기관 : 대한소화기내시경학회 간행물 : Clinical Endoscopy 52권 4호 발행 연도 : 2019 페이지 : pp. 340-346 (7 pages)

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Background/Aims: This study aimed to evaluate the feasibility and efficacy of endoscopic ultrasound-guided fine needle biopsy (EUS-FNB) using a core needle for hepatic solid masses (HSMs). Additionally, the study aimed to assess factors that influence the diagnostic accuracy of EUS-FNB for HSMs.
Methods: A retrospective analysis of patients who underwent EUS-FNB for the pathological diagnosis of HSMs was conducted between January 2013 and July 2017. The procedure had been performed using core needles of different calibers. The assessed variables were mass size, puncture route, needle type, and the number of needle passes.
Results: Fifty-eight patients underwent EUS-FNB for the pathologic evaluation of HSMs with a mean mass size of 21.4±9.2 mm. EUS-FNB was performed with either a 20-G (n=14), 22-G (n=29) or a 25-G core needle (n=15). The diagnostic accuracy for this procedure was 89.7%, but both specimen adequacy for histology and available immunohistochemistry stain were 91.4%. The sensitivity and specificity of EUS-FNB were 89.7% and 100%, respectively. There was one case involving bleeding as a complication, which was controlled with endoscopic hemostasis. According to the multivariate analysis, no variable was independently associated with a correct final diagnosis.
Conclusions: EUS-FNB with core biopsy needle is a safe and highly accurate diagnostic option for assessing HSMs. There were no variable factors associated with diagnostic accuracy. Clin Endosc 2019;52:340-346

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