Inter-Observer Agreement in the Endoscopic Classification of Colorectal Laterally Spreading Tumors: A Multicenter Study Between Experts and Trainees

Lee, Yoo Jin; Kim, Eun Soo; Park, Kyung Sik; Cho, Kwang Bum; Lee, Mi-Young; Kim, Sung Kook; Jeon, Seong Woo; Jung, Min Kyu; Jang, Byung Ik; Kim, Kyeong Ok; Lee, Si Hyung; Kim, Eun Young; Kwon, Joong Goo; Jung, Jin Tae; Yang, Chang Heon; Kim, Wan Jung; Kim, Hyun Jin; Seo, Hyang Eun

doi:10.1007/s10620-014-3206-3

Cited by 12 publications

(14 citation statements)

References 18 publications

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“…Lee et al reported the interobserver agreement and accuracy of LST classification for experts and trainees. 32 These results demonstrated that experts achieved superior accuracy in LST classifications (experts, 85.9% vs trainees, 72.5%, P < 0.001). According to a subgroup analysis in that report, the accuracy for LST-G homogeneous type was 88.3% among experts and 61.8% among trainees (P < 0.001).…”

Section: Discussionmentioning

confidence: 82%

“…Type 2 lesions tended to be misdiagnosed as Type 3 lesions in the LEE and HEE groups; however, Type 1 lesions tended to be misdiagnosed as Type 2 lesions in the student group. Lee et al reported the interobserver agreement and accuracy of LST classification for experts and trainees . These results demonstrated that experts achieved superior accuracy in LST classifications (experts, 85.9% vs trainees, 72.5%, P < 0.001).…”

Section: Discussionmentioning

confidence: 99%

“…Further, the accuracy for LST‐G nodular mixed type was 98.4% among experts and 97.8% among trainees ( P = 0.731). In the present study, the accuracy in the HEE group appeared to be a little lower than previously reported . This might be explained by the fact that we subclassified LST‐G into three groups in the present study, whereas the previous report divided LST‐G into two groups and did not include an analysis in which students estimated the diameters of granules and nodules.…”

Section: Discussionmentioning

confidence: 99%

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Clinical significance and validity of the subclassification for colorectal laterally spreading tumor granular type

Shigita

Oka

Tanaka

et al. 2016

J of Gastro and Hepatol

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Clinical significance and validity of the subclassification for colorectal laterally spreading tumor granular type

Shigita

Oka

Tanaka

et al. 2016

J of Gastro and Hepatol

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“…b, all micrographs show a good compatibility between PFSA and PFCA. It has been proposed that the interaction between sulfonyl and carboxyl groups has certain impact on the dispersion, especially when PFSA and PFCA are blended at approximately proportion . In our opinion, the unusual morphology of the 50:50 PFSA/PFCA blend membrane could be primarily due to the occurrence of microphase separation, which also promotes same ions to self‐aggregate and then form smaller ionic clusters.…”

Section: Resultsmentioning

confidence: 84%

Morphology and properties of perfluorosulfonic acid polymer/perfluorocarboxylic acid polymer blend membranes

Wang

Wang²,

Dou³

et al. 2014

Polymer Engineering & Sci

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A melt-extruded method has been used to prepare blend membranes of Perfluorosulfonic Acid Polymer (PFSA) and Perfluorocarboxylic Acid Polymer (PFCA) with different combination ratios. Fourier Transform Infrared (FT-IR) and X-ray Diffraction (XRD) analyses have showed that the chemical structure and crystallization behaviour of both polymers remained unchanged in the blend membrane, and the crystallinity has been increased for the blend membrane with a higher weight fraction of PFCA. According to the results obtained from Scanning Electron Microscope (SEM), PFSA and PFCA polymers are well compatible, forming mixed aggregates containing both sulphonyl and carboxyl ions. Surprisingly, a membrane containing a 50:50 ratio of PFSA/PFCA has showed microphase separation, and it possesses the smallest ionic cluster size among all the blend membranes prepared, as illustrated by the Small Angle X-Ray Scattering (SAXS) analysis. In addition, when the PFCA content was increased, the ion exchange capacity (IEC) for blend membranes remained the same, while their water uptake and proton conductivity have decreased rapidly. Compared with the PFSA/PFCA two-layered membrane, this PFSA/blend/PFCA membrane not only maintained respectable electrolysis property, also exhibited significantly higher peel strength, especially after the hydrolization process; plus, it has showed excellent resistance to the peeling damage under the operational conditions of chlor-alkali electrolytic cells. POLYM. ENG. SCI.,

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“…Detailed information about polyps is essential in clinical practice, particularly with regard to communication between referring physicians and physicians at referral centers; for example, polyp size and morphology data could greatly facilitate risk assessments of the malignant potential of tumors and decisions regarding optimal treatment approaches 1718. Without this information, unnecessary repeat colonoscopies may be performed, with consequent increased costs and greater procedural risks.…”

Section: Discussionmentioning

confidence: 99%

A wide variation of the quality of colonoscopy reporting system in the real clinical practice in southeastern area of Korea

et al. 2016

Self Cite

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Background/AimsEstablishment of a colonoscopy reporting system is a prerequisite to determining and improving quality. This study aimed to investigate colonoscopists' opinions and the actual situation of a colonoscopy reporting system in a clinical practice in southeastern area of Korea and to assess the factors predictive of an inadequate reporting system.MethodsPhysicians who performed colonoscopies in the Daegu-Gyeongbuk province of Korea and were registered with the Korean Society of Gastrointestinal Endoscopy (KSGE) were interviewed via mail about colonoscopy reporting systems using a standardized questionnaire.ResultsOf 181 endoscopists invited to participate, 125 responded to the questionnaires (response rate, 69%). Most responders were internists (105/125, 84%) and worked in primary clinics (88/125, 70.4%). Seventy-one specialists (56.8%) held board certifications for endoscopy from the KSGE. A median of 20 colonoscopies (interquartile range, 10–47) was performed per month. Although 88.8% of responders agreed that a colonoscopy reporting system is necessary, only 18.4% (23/125) had achieved the optimal reporting system level recommended by the Quality Assurance Task Group of the National Colorectal Cancer Roundtable. One-third of endoscopists replied that they did not use a reporting document for the main reasons of "too busy" and "inconvenience." Non-endoscopy specialists and primary care centers were independent predictive factors for failure to use a colonoscopy reporting system.ConclusionsThe quality of colonoscopy reporting systems varies widely and is considerably suboptimal in actual clinical practice settings in southeastern Korea, indicating considerable room for quality improvements in this field.

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Inter-Observer Agreement in the Endoscopic Classification of Colorectal Laterally Spreading Tumors: A Multicenter Study Between Experts and Trainees

Abstract: Inter-observer agreement and accuracy for LST subtype classification differ significantly between experts and trainees. Implementation of an adequate training system for beginners is necessary to better identify colorectal LSTs.

Cited by 12 publications

References 18 publications

Clinical significance and validity of the subclassification for colorectal laterally spreading tumor granular type

Clinical significance and validity of the subclassification for colorectal laterally spreading tumor granular type

Morphology and properties of perfluorosulfonic acid polymer/perfluorocarboxylic acid polymer blend membranes

A wide variation of the quality of colonoscopy reporting system in the real clinical practice in southeastern area of Korea

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