100 results on '"Roger Benjamin"'
Search Results
2. Measuring the generic skills of higher education students and graduates: Implementation of CLA+ international
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Doris Zahner, Jonathan M. Lehrfeld, Roger Benjamin, and Dirk Van Damme
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Medical education ,Higher education ,business.industry ,Psychology ,business - Published
- 2021
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3. CHAPTER 4. Colonial Panaromania
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Roger Benjamin
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History ,Ancient history ,Colonialism - Published
- 2020
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4. Factores de implantación de la ESS en los territorios: propuesta para una nueva modelización
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Artis, Amélie, Roger, Benjamin, Rousselière, Damien, Sciences Po Grenoble - Institut d'études politiques de Grenoble (IEPG ), Université Grenoble Alpes (UGA), Structures et Marché Agricoles, Ressources et Territoires (SMART-LERECO), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and AGROCAMPUS OUEST-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
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développement territorial ,Modélisation ,Economie Sociale et Solidaire ,social and solidarity economy ,SSE ,socioeconomic characteristics ,[SHS.EC]Humanities and Social Sciences/domain_shs.ec ,territorial developement ,[SHS]Humanities and Social Sciences - Abstract
International audience; A great deal of research has been done in France to measure the size of the social and solidarity economy (SSE) at different geographical levels. This work comes from two traditions: one is founded on descriptive statistics (relying on a delimitation of the SSE and a stabilized quantitative methodology), while the other uses qualitative data to better understand the factors that account for the size of the SSE (historical, geographical, socioeconomic, etc.). There are some persistent challenges to studying the size and the role of the SSE in territorial development, and more work needs to be done on the factors that affect the geographical establishment of SSE organizations. This article proposes a statistical model that makes it possible to study the relationships between the socioeconomic characteristics of a given territory and the establishment of the SSE there.; En Francia, numerosos estudios permiten medir el peso de la economía social y solidaria (ESS) a diferentes escalas territoriales. Estos trabajos proceden de dos enfoques tradicionales: uno basado en las estadísticas descriptivas (apoyándose en un perímetro de la ESS y una metodología cuantitativa estabilizada), otro basado en datos cualitativos para entender mejor los factores explicativos de este peso (históricos, geográficos, socioeconómicos etc.). Siguen pendientes los retos metodológicos que plantea el estudio del peso y sobre todo del papel de la ESS en el desarrollo territorial, y queda profundizar los trabajos sobre los factores de implantación geográfica de las organizaciones de la ESS. En este artículo se propone un modelo estadístico que permite analizar estos vínculos entre las características socioeconómicas de un territorio y la implantación de la ESS.; En France, de nombreux travaux permettent de mesurer le poids de l’économie sociale et solidaire (ESS) à différentes échelles territoriales. Ils sont issus de deux traditions : l’une fondée sur des statistiques descriptives (s’appuyant sur un périmètre de l’ESS et une méthodologie quantitative stabilisée), l’autre basée sur des données qualitatives afin de mieux comprendre les facteurs explicatifs de ce poids (historiques, géographiques, socio-économiques, etc.). Les défis méthodologiques posés par l’étude du poids et surtout du rôle de l’ESS dans le développement territorial persistent, et les travaux sur les facteurs d’implantation géographique des organisations de l’ESS restent à approfondir. Cet article propose un modèle statistique permettant d’étudier ces relations entre caractéristiques socio-économiques d’un territoire et implantation de l’ESS.
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- 2020
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5. The Future Is Asian: Global Order In The Twenty-First Century
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Roger Benjamin
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Economics and Econometrics ,History ,Order (business) ,Political Science and International Relations ,Geography, Planning and Development ,Economic history ,Twenty-First Century ,Law - Abstract
General619South Asia636Middle East627South East Asia648Central Asia634East Asia652What makes this survey distinctive is that the whole is greater than the sum of its parts. Khanna draws on numerous...
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- 2019
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6. 6. Traveling Scholarships and the Academic Exotic
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Roger Benjamin
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- 2019
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7. 5. Colonial Panoramania
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Roger Benjamin
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History ,Ancient history ,Colonialism - Published
- 2019
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8. 10. Colonial Museology in Algiers
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Roger Benjamin
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Museology ,media_common.quotation_subject ,Art ,Ancient history ,Colonialism ,media_common - Published
- 2019
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9. 1. Orient or France? Nineteenth-Century Debates
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Roger Benjamin
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- 2019
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10. 7. Matisse and Modernist Orientalism
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Roger Benjamin
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media_common.quotation_subject ,Orientalism ,Art history ,Art ,media_common - Published
- 2019
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11. 3. A Society for Orientalists
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Roger Benjamin
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- 2019
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12. 8. Advancing the Indigenous Decorative Arts
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Roger Benjamin
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business.product_category ,media_common.quotation_subject ,Decorative arts ,Art ,business ,Indigenous ,media_common ,Visual arts - Published
- 2019
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13. 4. Orientalists in the Public Eye
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Roger Benjamin
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- 2019
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14. Michael R. Auslin. The End of the Asian Century: War, Stagnation, and the Risks to the World’s Most Dynamic Region
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Roger Benjamin
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Economics and Econometrics ,History ,Political Science and International Relations ,Geography, Planning and Development ,Economic history ,Law ,Asian Century - Published
- 2018
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15. The Industrial Future Of The Pacific Basin
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Roger Benjamin and Robert T Kudrle
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- 2019
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16. Visual inspection and dermoscopy, alone or in combination, for diagnosing keratinocyte skin cancers in adults
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Clare Davenport, Roger Benjamin Aldridge, Alana Durack, Jonathan J Deeks, Hywel C Williams, Rubeta N Matin, Louise Johnston, Abha Gulati, Yemisi Takwoingi, Susan Bayliss, Hamid Tehrani, Colette O'Sullivan, Jacqueline Dinnes, Naomi Chuchu, Kai Yuen Wong, Jo Leonardi-Bee, and Sue Ann Chan
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Medicine General & Introductory Medical Sciences ,Adult ,Keratinocytes ,medicine.medical_specialty ,Skin Neoplasms ,Population ,MEDLINE ,Dermoscopy ,Sensitivity and Specificity ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Photography ,Humans ,Medicine ,Pharmacology (medical) ,030212 general & internal medicine ,education ,Physical Examination ,Aged ,education.field_of_study ,business.industry ,Middle Aged ,medicine.disease ,Dermatology ,Clinical trial ,Visual inspection ,Data extraction ,Carcinoma, Basal Cell ,Meta-analysis ,Carcinoma, Squamous Cell ,Diagnostic odds ratio ,Skin cancer ,business ,Algorithms - Abstract
© 2018 The Cochrane Collaboration. Background: Early accurate detection of all skin cancer types is important to guide appropriate management, to reduce morbidity and to improve survival. Basal cell carcinoma (BCC) is almost always a localised skin cancer with potential to infiltrate and damage surrounding tissue, whereas a minority of cutaneous squamous cell carcinomas (cSCCs) and invasive melanomas are higher-risk skin cancers with the potential to metastasise and cause death. Dermoscopy has become an important tool to assist specialist clinicians in the diagnosis of melanoma, and is increasingly used in primary-care settings. Dermoscopy is a precision-built handheld illuminated magnifier that allows more detailed examination of the skin down to the level of the superficial dermis. Establishing the value of dermoscopy over and above visual inspection for the diagnosis of BCC or cSCC in primary- and secondary-care settings is critical to understanding its potential contribution to appropriate skin cancer triage, including referral of higher-risk cancers to secondary care, the identification of low-risk skin cancers that might be treated in primary care and to provide reassurance to those with benign skin lesions who can be safely discharged. Objectives: To determine the diagnostic accuracy of visual inspection and dermoscopy, alone or in combination, for the detection of (a) BCC and (b) cSCC, in adults. We separated studies according to whether the diagnosis was recorded face-to-face (in person) or based on remote (image-based) assessment. Search methods: We undertook a comprehensive search of the following databases from inception up to August 2016: Cochrane Central Register of Controlled Trials; MEDLINE; Embase; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. Selection criteria: Studies of any design that evaluated visual inspection or dermoscopy or both in adults with lesions suspicious for skin cancer, compared with a reference standard of either histological confirmation or clinical follow-up. Data collection and analysis: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic thresholds were missing. We estimated accuracy using hierarchical summary ROC methods. We undertook analysis of studies allowing direct comparison between tests. To facilitate interpretation of results, we computed values of sensitivity at the point on the SROC curve with 80% fixed specificity and values of specificity with 80% fixed sensitivity. We investigated the impact of in-person test interpretation; use of a purposely-developed algorithm to assist diagnosis; and observer expertise. Main results: We included 24 publications reporting on 24 study cohorts, providing 27 visual inspection datasets (8805 lesions; 2579 malignancies) and 33 dermoscopy datasets (6855 lesions; 1444 malignancies). The risk of bias was mainly low for the index test (for dermoscopy evaluations) and reference standard domains, particularly for in-person evaluations, and high or unclear for participant selection, application of the index test for visual inspection and for participant flow and timing. We scored concerns about the applicability of study findings as of 'high' or 'unclear' concern for almost all studies across all domains assessed. Selective participant recruitment, lack of reproducibility of diagnostic thresholds and lack of detail on observer expertise were particularly problematic. The detection of BCC was reported in 28 datasets; 15 on an in-person basis and 13 image-based. Analysis of studies by prior testing of participants and according to observer expertise was not possible due to lack of data. Studies were primarily conducted in participants referred for specialist assessment of lesions with available histological classification. We found no clear differences in accuracy between dermoscopy studies undertaken in person and those which evaluated images. The lack of effect observed may be due to other sources of heterogeneity, including variations in the types of skin lesion studied, in dermatoscopes used, or in the use of algorithms and varying thresholds for deciding on a positive test result. Meta-analysis found in-person evaluations of dermoscopy (7 evaluations; 4683 lesions and 363 BCCs) to be more accurate than visual inspection alone for the detection of BCC (8 evaluations; 7017 lesions and 1586 BCCs), with a relative diagnostic odds ratio (RDOR) of 8.2 (95% confidence interval (CI) 3.5 to 19.3; P < 0.001). This corresponds to predicted differences in sensitivity of 14% (93% versus 79%) at a fixed specificity of 80% and predicted differences in specificity of 22% (99% versus 77%) at a fixed sensitivity of 80%. We observed very similar results for the image-based evaluations. When applied to a hypothetical population of 1000 lesions, of which 170 are BCC (based on median BCC prevalence across studies), an increased sensitivity of 14% from dermoscopy would lead to 24 fewer BCCs missed, assuming 166 false positive results from both tests. A 22% increase in specificity from dermoscopy with sensitivity fixed at 80% would result in 183 fewer unnecessary excisions, assuming 34 BCCs missed for both tests. There was not enough evidence to assess the use of algorithms or structured checklists for either visual inspection or dermoscopy. Insufficient data were available to draw conclusions on the accuracy of either test for the detection of cSCCs. Authors' conclusions: Dermoscopy may be a valuable tool for the diagnosis of BCC as an adjunct to visual inspection of a suspicious skin lesion following a thorough history-taking including assessment of risk factors for keratinocyte cancer. The evidence primarily comes from secondary-care (referred) populations and populations with pigmented lesions or mixed lesion types. There is no clear evidence supporting the use of currently-available formal algorithms to assist dermoscopy diagnosis.
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- 2018
- Full Text
- View/download PDF
17. Visual inspection and dermoscopy, alone or in combination, for diagnosing keratinocyte skin cancers in adults
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Dinnes, Jacqueline, Deeks, Jonathan J, Chuchu, Naomi, Matin, Rubeta N, Wong, Kai Yuen, Aldridge, Roger Benjamin, Durack, Alana, Gulati, Abha, Chan, Sue Ann, Johnston, Louise, Bayliss, Susan E, Leonardi-Bee, Jo, Takwoingi, Yemisi, Davenport, Clare, O'Sullivan, Colette, Tehrani, Hamid, Williams, Hywel C, Cochrane Skin Cancer Diagnostic Test Accuracy Group, Dinnes, Jacqueline [0000-0003-1343-7335], Deeks, Jonathan J [0000-0002-8850-1971], Wong, Kai Yuen [0000-0002-6060-1487], Bayliss, Susan E [0000-0003-3025-9323], Takwoingi, Yemisi [0000-0002-5828-9746], and Apollo - University of Cambridge Repository
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Adult ,Keratinocytes ,Skin Neoplasms ,Carcinoma, Basal Cell ,Carcinoma, Squamous Cell ,Photography ,Humans ,Dermoscopy ,Middle Aged ,Physical Examination ,Sensitivity and Specificity ,Algorithms ,Aged - Abstract
BACKGROUND: Early accurate detection of all skin cancer types is important to guide appropriate management, to reduce morbidity and to improve survival. Basal cell carcinoma (BCC) is almost always a localised skin cancer with potential to infiltrate and damage surrounding tissue, whereas a minority of cutaneous squamous cell carcinomas (cSCCs) and invasive melanomas are higher-risk skin cancers with the potential to metastasise and cause death. Dermoscopy has become an important tool to assist specialist clinicians in the diagnosis of melanoma, and is increasingly used in primary-care settings. Dermoscopy is a precision-built handheld illuminated magnifier that allows more detailed examination of the skin down to the level of the superficial dermis. Establishing the value of dermoscopy over and above visual inspection for the diagnosis of BCC or cSCC in primary- and secondary-care settings is critical to understanding its potential contribution to appropriate skin cancer triage, including referral of higher-risk cancers to secondary care, the identification of low-risk skin cancers that might be treated in primary care and to provide reassurance to those with benign skin lesions who can be safely discharged. OBJECTIVES: To determine the diagnostic accuracy of visual inspection and dermoscopy, alone or in combination, for the detection of (a) BCC and (b) cSCC, in adults. We separated studies according to whether the diagnosis was recorded face-to-face (in person) or based on remote (image-based) assessment. SEARCH METHODS: We undertook a comprehensive search of the following databases from inception up to August 2016: Cochrane Central Register of Controlled Trials; MEDLINE; Embase; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. SELECTION CRITERIA: Studies of any design that evaluated visual inspection or dermoscopy or both in adults with lesions suspicious for skin cancer, compared with a reference standard of either histological confirmation or clinical follow-up. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic thresholds were missing. We estimated accuracy using hierarchical summary ROC methods. We undertook analysis of studies allowing direct comparison between tests. To facilitate interpretation of results, we computed values of sensitivity at the point on the SROC curve with 80% fixed specificity and values of specificity with 80% fixed sensitivity. We investigated the impact of in-person test interpretation; use of a purposely-developed algorithm to assist diagnosis; and observer expertise. MAIN RESULTS: We included 24 publications reporting on 24 study cohorts, providing 27 visual inspection datasets (8805 lesions; 2579 malignancies) and 33 dermoscopy datasets (6855 lesions; 1444 malignancies). The risk of bias was mainly low for the index test (for dermoscopy evaluations) and reference standard domains, particularly for in-person evaluations, and high or unclear for participant selection, application of the index test for visual inspection and for participant flow and timing. We scored concerns about the applicability of study findings as of 'high' or 'unclear' concern for almost all studies across all domains assessed. Selective participant recruitment, lack of reproducibility of diagnostic thresholds and lack of detail on observer expertise were particularly problematic.The detection of BCC was reported in 28 datasets; 15 on an in-person basis and 13 image-based. Analysis of studies by prior testing of participants and according to observer expertise was not possible due to lack of data. Studies were primarily conducted in participants referred for specialist assessment of lesions with available histological classification. We found no clear differences in accuracy between dermoscopy studies undertaken in person and those which evaluated images. The lack of effect observed may be due to other sources of heterogeneity, including variations in the types of skin lesion studied, in dermatoscopes used, or in the use of algorithms and varying thresholds for deciding on a positive test result.Meta-analysis found in-person evaluations of dermoscopy (7 evaluations; 4683 lesions and 363 BCCs) to be more accurate than visual inspection alone for the detection of BCC (8 evaluations; 7017 lesions and 1586 BCCs), with a relative diagnostic odds ratio (RDOR) of 8.2 (95% confidence interval (CI) 3.5 to 19.3; P < 0.001). This corresponds to predicted differences in sensitivity of 14% (93% versus 79%) at a fixed specificity of 80% and predicted differences in specificity of 22% (99% versus 77%) at a fixed sensitivity of 80%. We observed very similar results for the image-based evaluations.When applied to a hypothetical population of 1000 lesions, of which 170 are BCC (based on median BCC prevalence across studies), an increased sensitivity of 14% from dermoscopy would lead to 24 fewer BCCs missed, assuming 166 false positive results from both tests. A 22% increase in specificity from dermoscopy with sensitivity fixed at 80% would result in 183 fewer unnecessary excisions, assuming 34 BCCs missed for both tests. There was not enough evidence to assess the use of algorithms or structured checklists for either visual inspection or dermoscopy.Insufficient data were available to draw conclusions on the accuracy of either test for the detection of cSCCs. AUTHORS' CONCLUSIONS: Dermoscopy may be a valuable tool for the diagnosis of BCC as an adjunct to visual inspection of a suspicious skin lesion following a thorough history-taking including assessment of risk factors for keratinocyte cancer. The evidence primarily comes from secondary-care (referred) populations and populations with pigmented lesions or mixed lesion types. There is no clear evidence supporting the use of currently-available formal algorithms to assist dermoscopy diagnosis.
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- 2018
18. Dermoscopy, with and without visual inspection, for diagnosing melanoma in adults
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Monica Fawzy, Jacqueline Dinnes, Fiona M Walter, Lavinia Ferrante di Ruffano, Susan Bayliss, Rubeta N Matin, David R Thomson, Hywel C Williams, Naomi Chuchu, Rachel J. M. Abbott, Jonathan J Deeks, Yemisi Takwoingi, Roger Benjamin Aldridge, Kathie Godfrey, Kai Yuen Wong, Clare Davenport, and Matthew J. Grainge
- Subjects
Adult ,Medicine General & Introductory Medical Sciences ,medicine.medical_specialty ,Skin Neoplasms ,Biopsy ,Population ,Dermoscopy ,Subgroup analysis ,Sensitivity and Specificity ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Pharmacology (medical) ,education ,Melanoma ,Physical Examination ,Skin ,education.field_of_study ,business.industry ,medicine.disease ,Clinical trial ,Visual inspection ,Data extraction ,030220 oncology & carcinogenesis ,Meta-analysis ,Diagnostic odds ratio ,Radiology ,Skin cancer ,business ,Algorithms - Abstract
BACKGROUND: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. Although history‐taking and visual inspection of a suspicious lesion by a clinician are usually the first in a series of ‘tests’ to diagnose skin cancer, dermoscopy has become an important tool to assist diagnosis by specialist clinicians and is increasingly used in primary care settings. Dermoscopy is a magnification technique using visible light that allows more detailed examination of the skin compared to examination by the naked eye alone. Establishing the additive value of dermoscopy over and above visual inspection alone across a range of observers and settings is critical to understanding its contribution for the diagnosis of melanoma and to future understanding of the potential role of the growing number of other high‐resolution image analysis techniques. OBJECTIVES: To determine the diagnostic accuracy of dermoscopy alone, or when added to visual inspection of a skin lesion, for the detection of cutaneous invasive melanoma and atypical intraepidermal melanocytic variants in adults. We separated studies according to whether the diagnosis was recorded face‐to‐face (in‐person), or based on remote (image‐based), assessment. SEARCH METHODS: We undertook a comprehensive search of the following databases from inception up to August 2016: CENTRAL; MEDLINE; Embase; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. SELECTION CRITERIA: Studies of any design that evaluated dermoscopy in adults with lesions suspicious for melanoma, compared with a reference standard of either histological confirmation or clinical follow‐up. Data on the accuracy of visual inspection, to allow comparisons of tests, was included only if reported in the included studies of dermoscopy. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS‐2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated accuracy using hierarchical summary receiver operating characteristic (SROC),methods. Analysis of studies allowing direct comparison between tests was undertaken. To facilitate interpretation of results, we computed values of sensitivity at the point on the SROC curve with 80% fixed specificity and values of specificity with 80% fixed sensitivity. We investigated the impact of in‐person test interpretation; use of a purposely developed algorithm to assist diagnosis; observer expertise; and dermoscopy training. MAIN RESULTS: We included a total of 104 study publications reporting on 103 study cohorts with 42,788 lesions (including 5700 cases), providing 354 datasets for dermoscopy. The risk of bias was mainly low for the index test and reference standard domains and mainly high or unclear for participant selection and participant flow. Concerns regarding the applicability of study findings were largely scored as ‘high’ concern in three of four domains assessed. Selective participant recruitment, lack of reproducibility of diagnostic thresholds and lack of detail on observer expertise were particularly problematic. The accuracy of dermoscopy for the detection of invasive melanoma or atypical intraepidermal melanocytic variants was reported in 86 datasets; 26 for evaluations conducted in person (dermoscopy added to visual inspection), and 60 for image‐based evaluations (diagnosis based on interpretation of dermoscopic images). Analyses of studies by prior testing revealed no obvious effect on accuracy; analyses were hampered by the lack of studies in primary care, lack of relevant information and the restricted inclusion of lesions selected for biopsy or excision. Accuracy was higher for in‐person diagnosis compared to image‐based evaluations (relative diagnostic odds ratio (RDOR) 4.6, 95% confidence interval (CI) 2.4 to 9.0; P < 0.001). We compared accuracy for (a), in‐person evaluations of dermoscopy (26 evaluations; 23,169 lesions and 1664 melanomas),versus visual inspection alone (13 evaluations; 6740 lesions and 459 melanomas), and for (b), image‐based evaluations of dermoscopy (60 evaluations; 13,475 lesions and 2851 melanomas),versus image‐based visual inspection (11 evaluations; 1740 lesions and 305 melanomas). For both comparisons, meta‐analysis found dermoscopy to be more accurate than visual inspection alone, with RDORs of (a), 4.7 (95% CI 3.0 to 7.5; P < 0.001), and (b), 5.6 (95% CI 3.7 to 8.5; P < 0.001). For a), the predicted difference in sensitivity at a fixed specificity of 80% was 16% (95% CI 8% to 23%; 92% for dermoscopy + visual inspection versus 76% for visual inspection), and predicted difference in specificity at a fixed sensitivity of 80% was 20% (95% CI 7% to 33%; 95% for dermoscopy + visual inspection versus 75% for visual inspection). For b) the predicted differences in sensitivity was 34% (95% CI 24% to 46%; 81% for dermoscopy versus 47% for visual inspection), at a fixed specificity of 80%, and predicted difference in specificity was 40% (95% CI 27% to 57%; 82% for dermoscopy versus 42% for visual inspection), at a fixed sensitivity of 80%. Using the median prevalence of disease in each set of studies ((a), 12% for in‐person and (b), 24% for image‐based), for a hypothetical population of 1000 lesions, an increase in sensitivity of (a), 16% (in‐person), and (b), 34% (image‐based), from using dermoscopy at a fixed specificity of 80% equates to a reduction in the number of melanomas missed of (a), 19 and (b), 81 with (a), 176 and (b), 152 false positive results. An increase in specificity of (a), 20% (in‐person), and (b), 40% (image‐based), at a fixed sensitivity of 80% equates to a reduction in the number of unnecessary excisions from using dermoscopy of (a), 176 and (b), 304 with (a), 24 and (b), 48 melanomas missed. The use of a named or published algorithm to assist dermoscopy interpretation (as opposed to no reported algorithm or reported use of pattern analysis), had no significant impact on accuracy either for in‐person (RDOR 1.4, 95% CI 0.34 to 5.6; P = 0.17), or image‐based (RDOR 1.4, 95% CI 0.60 to 3.3; P = 0.22), evaluations. This result was supported by subgroup analysis according to algorithm used. We observed higher accuracy for observers reported as having high experience and for those classed as ‘expert consultants’ in comparison to those considered to have less experience in dermoscopy, particularly for image‐based evaluations. Evidence for the effect of dermoscopy training on test accuracy was very limited but suggested associated improvements in sensitivity. AUTHORS' CONCLUSIONS: Despite the observed limitations in the evidence base, dermoscopy is a valuable tool to support the visual inspection of a suspicious skin lesion for the detection of melanoma and atypical intraepidermal melanocytic variants, particularly in referred populations and in the hands of experienced users. Data to support its use in primary care are limited, however, it may assist in triaging suspicious lesions for urgent referral when employed by suitably trained clinicians. Formal algorithms may be of most use for dermoscopy training purposes and for less expert observers, however reliable data comparing approaches using dermoscopy in person are lacking.
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- 2018
- Full Text
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19. Visual inspection for diagnosing cutaneous melanoma in adults
- Author
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Dinnes, Jacqueline, Deeks, Jonathan J, Grainge, Matthew J, Chuchu, Naomi, Ferrante Di Ruffano, Lavinia, Matin, Rubeta N, Thomson, David R, Wong, Kai Yuen, Aldridge, Roger Benjamin, Abbott, Rachel, Fawzy, Monica, Bayliss, Susan E, Takwoingi, Yemisi, Davenport, Clare, Godfrey, Kathie, Walter, Fiona M, Williams, Hywel C, Cochrane Skin Cancer Diagnostic Test Accuracy Group, Walter, Fiona [0000-0002-7191-6476], and Apollo - University of Cambridge Repository
- Subjects
Adult ,Skin Neoplasms ,Humans ,Diagnostic Errors ,Middle Aged ,Melanoma ,Physical Examination ,Sensitivity and Specificity ,Algorithms ,Aged - Abstract
BACKGROUND: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. History-taking and visual inspection of a suspicious lesion by a clinician is usually the first in a series of 'tests' to diagnose skin cancer. Establishing the accuracy of visual inspection alone is critical to understating the potential contribution of additional tests to assist in the diagnosis of melanoma. OBJECTIVES: To determine the diagnostic accuracy of visual inspection for the detection of cutaneous invasive melanoma and atypical intraepidermal melanocytic variants in adults with limited prior testing and in those referred for further evaluation of a suspicious lesion. Studies were separated according to whether the diagnosis was recorded face-to-face (in-person) or based on remote (image-based) assessment. SEARCH METHODS: We undertook a comprehensive search of the following databases from inception up to August 2016: CENTRAL; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. SELECTION CRITERIA: Test accuracy studies of any design that evaluated visual inspection in adults with lesions suspicious for melanoma, compared with a reference standard of either histological confirmation or clinical follow-up. We excluded studies reporting data for 'clinical diagnosis' where dermoscopy may or may not have been used. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated summary sensitivities and specificities per algorithm and threshold using the bivariate hierarchical model. We investigated the impact of: in-person test interpretation; use of a purposely developed algorithm to assist diagnosis; and observer expertise. MAIN RESULTS: We included 49 publications reporting on a total of 51 study cohorts with 34,351 lesions (including 2499 cases), providing 134 datasets for visual inspection. Across almost all study quality domains, the majority of study reports provided insufficient information to allow us to judge the risk of bias, while in three of four domains that we assessed we scored concerns regarding applicability of study findings as 'high'. Selective participant recruitment, lack of detail regarding the threshold for deciding on a positive test result, and lack of detail on observer expertise were particularly problematic.Attempts to analyse studies by degree of prior testing were hampered by a lack of relevant information and by the restricted inclusion of lesions selected for biopsy or excision. Accuracy was generally much higher for in-person diagnosis compared to image-based evaluations (relative diagnostic odds ratio of 8.54, 95% CI 2.89 to 25.3, P < 0.001). Meta-analysis of in-person evaluations that could be clearly placed on the clinical pathway showed a general trade-off between sensitivity and specificity, with the highest sensitivity (92.4%, 95% CI 26.2% to 99.8%) and lowest specificity (79.7%, 95% CI 73.7% to 84.7%) observed in participants with limited prior testing (n = 3 datasets). Summary sensitivities were lower for those referred for specialist assessment but with much higher specificities (e.g. sensitivity 76.7%, 95% CI 61.7% to 87.1%) and specificity 95.7%, 95% CI 89.7% to 98.3%) for lesions selected for excision, n = 8 datasets). These differences may be related to differences in the spectrum of included lesions, differences in the definition of a positive test result, or to variations in observer expertise. We did not find clear evidence that accuracy is improved by the use of any algorithm to assist diagnosis in all settings. Attempts to examine the effect of observer expertise in melanoma diagnosis were hindered due to poor reporting. AUTHORS' CONCLUSIONS: Visual inspection is a fundamental component of the assessment of a suspicious skin lesion; however, the evidence suggests that melanomas will be missed if visual inspection is used on its own. The evidence to support its accuracy in the range of settings in which it is used is flawed and very poorly reported. Although published algorithms do not appear to improve accuracy, there is insufficient evidence to suggest that the 'no algorithm' approach should be preferred in all settings. Despite the volume of research evaluating visual inspection, further prospective evaluation of the potential added value of using established algorithms according to the prior testing or diagnostic difficulty of lesions may be warranted.
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- 2018
20. Visual inspection for diagnosing cutaneous melanoma in adults
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Lavinia Ferrante di Ruffano, David R Thomson, Susan Bayliss, Fiona M Walter, Yemisi Takwoingi, Kai Yuen Wong, Monica Fawzy, Kathie Godfrey, Jacqueline Dinnes, Rachel J. M. Abbott, Jonathan J Deeks, Hywel C Williams, Matthew J. Grainge, Naomi Chuchu, Clare Davenport, Rubeta N Matin, and Roger Benjamin Aldridge
- Subjects
Medicine General & Introductory Medical Sciences ,Adult ,medicine.medical_specialty ,Skin Neoplasms ,Physical examination ,Sensitivity and Specificity ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Clinical pathway ,medicine ,Humans ,Pharmacology (medical) ,Medical physics ,Diagnostic Errors ,Melanoma ,Physical Examination ,Aged ,medicine.diagnostic_test ,business.industry ,Middle Aged ,medicine.disease ,Clinical trial ,Visual inspection ,Data extraction ,030220 oncology & carcinogenesis ,Meta-analysis ,Diagnostic odds ratio ,Skin cancer ,business ,Algorithms - Abstract
BACKGROUND: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. History‐taking and visual inspection of a suspicious lesion by a clinician is usually the first in a series of ‘tests’ to diagnose skin cancer. Establishing the accuracy of visual inspection alone is critical to understating the potential contribution of additional tests to assist in the diagnosis of melanoma. OBJECTIVES: To determine the diagnostic accuracy of visual inspection for the detection of cutaneous invasive melanoma and atypical intraepidermal melanocytic variants in adults with limited prior testing and in those referred for further evaluation of a suspicious lesion. Studies were separated according to whether the diagnosis was recorded face‐to‐face (in‐person) or based on remote (image‐based) assessment. SEARCH METHODS: We undertook a comprehensive search of the following databases from inception up to August 2016: CENTRAL; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. SELECTION CRITERIA: Test accuracy studies of any design that evaluated visual inspection in adults with lesions suspicious for melanoma, compared with a reference standard of either histological confirmation or clinical follow‐up. We excluded studies reporting data for ‘clinical diagnosis’ where dermoscopy may or may not have been used. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS‐2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated summary sensitivities and specificities per algorithm and threshold using the bivariate hierarchical model. We investigated the impact of: in‐person test interpretation; use of a purposely developed algorithm to assist diagnosis; and observer expertise. MAIN RESULTS: We included 49 publications reporting on a total of 51 study cohorts with 34,351 lesions (including 2499 cases), providing 134 datasets for visual inspection. Across almost all study quality domains, the majority of study reports provided insufficient information to allow us to judge the risk of bias, while in three of four domains that we assessed we scored concerns regarding applicability of study findings as 'high'. Selective participant recruitment, lack of detail regarding the threshold for deciding on a positive test result, and lack of detail on observer expertise were particularly problematic. Attempts to analyse studies by degree of prior testing were hampered by a lack of relevant information and by the restricted inclusion of lesions selected for biopsy or excision. Accuracy was generally much higher for in‐person diagnosis compared to image‐based evaluations (relative diagnostic odds ratio of 8.54, 95% CI 2.89 to 25.3, P < 0.001). Meta‐analysis of in‐person evaluations that could be clearly placed on the clinical pathway showed a general trade‐off between sensitivity and specificity, with the highest sensitivity (92.4%, 95% CI 26.2% to 99.8%) and lowest specificity (79.7%, 95% CI 73.7% to 84.7%) observed in participants with limited prior testing (n = 3 datasets). Summary sensitivities were lower for those referred for specialist assessment but with much higher specificities (e.g. sensitivity 76.7%, 95% CI 61.7% to 87.1%) and specificity 95.7%, 95% CI 89.7% to 98.3%) for lesions selected for excision, n = 8 datasets). These differences may be related to differences in the spectrum of included lesions, differences in the definition of a positive test result, or to variations in observer expertise. We did not find clear evidence that accuracy is improved by the use of any algorithm to assist diagnosis in all settings. Attempts to examine the effect of observer expertise in melanoma diagnosis were hindered due to poor reporting. AUTHORS' CONCLUSIONS: Visual inspection is a fundamental component of the assessment of a suspicious skin lesion; however, the evidence suggests that melanomas will be missed if visual inspection is used on its own. The evidence to support its accuracy in the range of settings in which it is used is flawed and very poorly reported. Although published algorithms do not appear to improve accuracy, there is insufficient evidence to suggest that the ‘no algorithm’ approach should be preferred in all settings. Despite the volume of research evaluating visual inspection, further prospective evaluation of the potential added value of using established algorithms according to the prior testing or diagnostic difficulty of lesions may be warranted.
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- 2018
21. Visual inspection for the diagnosis of cutaneous melanoma in adults
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Dinnes, Jacqueline, Deeks, Jonathan J., Grainge, Matthew J., Chuchu, Naomi, Ferrante di Ruffano, Lavinia, Matin, Rubeta N., Thomson, David R., Wong, Kai Yuen, Aldridge, Roger Benjamin, Abbott, Rachel, Fawzy, Monica, Bayliss, Susan E., Takwoingi, Yemisi, Davenport, Clare, Godfrey, Kathie, Walter, Fiona M., and Williams, Hywel C.
- Abstract
Background: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. History-taking and visual inspection of a suspicious lesion by a clinician is usually the first in a series of ‘tests’ to diagnose skin cancer. Establishing the accuracy of visual inspection alone is critical to understating the potential contribution of additional tests to assist in the diagnosis of melanoma.Objectives: To determine the diagnostic accuracy of visual inspection for the detection of cutaneous invasive melanoma and intraepidermal melanocytic variants in adults with limited prior testing and in those referred for further evaluation of a suspicious lesion. Studies were separated according to whether the diagnosis was recorded face-to-face (in-person) or based on remote (image-based) assessment.Search methods: We undertook a comprehensive search of the following databases from inception up to August 2016: Cochrane Central Register of Controlled Trials; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles.Selection criteria: Test accuracy studies of any design that evaluated visual inspection in adults with lesions suspicious for melanoma, compared with a reference standard of, either histological confirmation or clinical follow-up. Studies reporting data for ‘clinical diagnosis’ where dermoscopy may or may not have been used were excluded.Data collection and analysis: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated summary sensitivities and specificities per algorithm and threshold using the bivariate hierarchical model. We investigated the impact of: in-person test interpretation; use of a purposely developed algorithm to assist diagnosis; and observer expertise.Main results: Forty-nine publications reporting on a total of 51 study cohorts with 34,351 lesions (including 2499 cases) were included, providing 134 datasets for visual inspection. Across almost all study quality domains, insufficient information was provided in the majority of study reports to allow the risk of bias to be judged, while concerns regarding applicability of study findings were scored as ‘High’ in three of four domains assessed. Selective participant recruitment, lack of detail regarding the threshold for deciding on a positive test result, and lack of detail on observer expertise were particularly problematic. Attempts to analyse studies by degree of prior testing were hampered by a lack of relevant information and by the restricted inclusion of lesions selected for biopsy or excision. Accuracy was generally much higher for in-person diagnosis compared to image-based evaluations (relative diagnostic odds ratio of 8.54, 95% CI 2.89, 25.3, P
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- 2018
22. Dermoscopy, with and without visual inspection, for the diagnosis of melanoma in adults
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Dinnes, Jacqueline, Deeks, Jonathan J., Chuchu, Naomi, Ferrante di Ruffano, Lavinia, Matin, Rubeta N., Thomson, David R., Wong, Kai Yuen, Aldridge, Roger Benjamin, Abbott, Rachel, Fawzy, Monica, Bayliss, Susan E., Grainge, Matthew J., Takwoingi, Yemisi, Davenport, Clare, Godfrey, Kathie, Walter, Fiona M., and Williams, Hywel C.
- Abstract
Background: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. Although history-taking and visual inspection of a suspicious lesion by a clinician are usually the first in a series of ‘tests’ to diagnose skin cancer, dermoscopy has become an important tool to assist diagnosis by specialist clinicians and is increasingly used in primary care settings. Dermoscopy is a magnification technique using visible light that allows more detailed examination of the skin compared to examination by the naked eye alone. Establishing the additive value of dermoscopy over and above visual inspection alone across a range of observers and settings is critical to understanding its contribution for the diagnosis of melanoma and to future understanding of the potential role of the growing number of other highresolution image analysis techniques.Objectives: To determine the diagnostic accuracy of dermoscopy for the detection of cutaneous invasive melanoma and atypical intraepidermal melanocytic variants in adults, and to compare its accuracy with that of visual inspection alone. Studies were separated according to whether the diagnosis was recorded face-to-face (in-person) or based on remote (image-based) assessment.Search methods: We undertook a comprehensive search of the following databases from inception up to August 2016: Cochrane Central Register of Controlled Trials; MEDLINE; Embase; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles.Selection criteria: Studies of any design that evaluated dermoscopy in adults with lesions suspicious for melanoma, compared with a reference standard of either histological confirmation or clinical follow-up. Data on the accuracy of visual inspection, to allow comparisons of tests, was included only if reported in the included studies of dermoscopy.Data collection and analysis: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated accuracy using hierarchical summary ROC methods. Analysis of studies allowing direct comparison between tests was undertaken. To facilitate interpretation of results, we computed values of sensitivity at the point on the SROC curve with 80% fixed specificity and values of specificity with 80% fixed sensitivity. We investigated the impact of in-person test interpretation; use of a purposely developed algorithm to assist diagnosis; observer expertise; and dermoscopy training.Main results: A total of 104 study publications reporting on 103 study cohorts with 42,788 lesions (including 5700 cases) were included, providing 354 datasets for dermoscopy. The risk of bias was mainly low for the index test and reference standard domains and mainly high or unclear for participant selection and participant flow. Concerns regarding the applicability of study findings were largely scored as ‘High’ concern in three of four domains assessed. Selective participant recruitment, lack of reproducibility of diagnostic thresholds and lack of detail on observer expertise were particularly problematic. The accuracy of dermoscopy for the detection of invasive melanoma or atypical intraepidermal melanocytic variants was reported in 86 datasets; 26 for evaluations conducted in-person (dermoscopy added to visual inspection) and 60 for image-based evaluations (diagnosis based on interpretation of dermoscopic images). Analyses of studies by prior testing revealed no obvious effect on accuracy; analyses were hampered by the lack of studies in primary care, lack of relevant information and the restricted inclusion of lesions selected for biopsy or excision. Accuracy was higher for in-person diagnosis compared to image-based evaluations (relative diagnostic odds ratio (RDOR) of 4.6; 95% CI 2.4, 9.0, P
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- 2018
23. Dermoscopy, with and without visual inspection, for diagnosing melanoma in adults
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Dinnes, Jacqueline, Deeks, Jonathan J, Chuchu, Naomi, Ferrante di Ruffano, Lavinia, Matin, Rubeta N, Thomson, David R, Wong, Kai Yuen, Aldridge, Roger Benjamin, Abbott, Rachel, Fawzy, Monica, Bayliss, Susan E, Grainge, Matthew J, Takwoingi, Yemisi, Davenport, Clare, Godfrey, Kathie, Walter, Fiona M, Williams, Hywel C, Cochrane Skin Cancer Diagnostic Test Accuracy Group, Walter, Fiona [0000-0002-7191-6476], and Apollo - University of Cambridge Repository
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Adult ,Skin Neoplasms ,Biopsy ,Humans ,Dermoscopy ,Melanoma ,Physical Examination ,Sensitivity and Specificity ,Algorithms ,Skin - Abstract
BACKGROUND: Melanoma has one of the fastest rising incidence rates of any cancer. It accounts for a small percentage of skin cancer cases but is responsible for the majority of skin cancer deaths. Although history-taking and visual inspection of a suspicious lesion by a clinician are usually the first in a series of 'tests' to diagnose skin cancer, dermoscopy has become an important tool to assist diagnosis by specialist clinicians and is increasingly used in primary care settings. Dermoscopy is a magnification technique using visible light that allows more detailed examination of the skin compared to examination by the naked eye alone. Establishing the additive value of dermoscopy over and above visual inspection alone across a range of observers and settings is critical to understanding its contribution for the diagnosis of melanoma and to future understanding of the potential role of the growing number of other high-resolution image analysis techniques. OBJECTIVES: To determine the diagnostic accuracy of dermoscopy alone, or when added to visual inspection of a skin lesion, for the detection of cutaneous invasive melanoma and atypical intraepidermal melanocytic variants in adults. We separated studies according to whether the diagnosis was recorded face-to-face (in-person), or based on remote (image-based), assessment. SEARCH METHODS: We undertook a comprehensive search of the following databases from inception up to August 2016: CENTRAL; MEDLINE; Embase; CINAHL; CPCI; Zetoc; Science Citation Index; US National Institutes of Health Ongoing Trials Register; NIHR Clinical Research Network Portfolio Database; and the World Health Organization International Clinical Trials Registry Platform. We studied reference lists and published systematic review articles. SELECTION CRITERIA: Studies of any design that evaluated dermoscopy in adults with lesions suspicious for melanoma, compared with a reference standard of either histological confirmation or clinical follow-up. Data on the accuracy of visual inspection, to allow comparisons of tests, was included only if reported in the included studies of dermoscopy. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted all data using a standardised data extraction and quality assessment form (based on QUADAS-2). We contacted authors of included studies where information related to the target condition or diagnostic threshold were missing. We estimated accuracy using hierarchical summary receiver operating characteristic (SROC),methods. Analysis of studies allowing direct comparison between tests was undertaken. To facilitate interpretation of results, we computed values of sensitivity at the point on the SROC curve with 80% fixed specificity and values of specificity with 80% fixed sensitivity. We investigated the impact of in-person test interpretation; use of a purposely developed algorithm to assist diagnosis; observer expertise; and dermoscopy training. MAIN RESULTS: We included a total of 104 study publications reporting on 103 study cohorts with 42,788 lesions (including 5700 cases), providing 354 datasets for dermoscopy. The risk of bias was mainly low for the index test and reference standard domains and mainly high or unclear for participant selection and participant flow. Concerns regarding the applicability of study findings were largely scored as 'high' concern in three of four domains assessed. Selective participant recruitment, lack of reproducibility of diagnostic thresholds and lack of detail on observer expertise were particularly problematic.The accuracy of dermoscopy for the detection of invasive melanoma or atypical intraepidermal melanocytic variants was reported in 86 datasets; 26 for evaluations conducted in person (dermoscopy added to visual inspection), and 60 for image-based evaluations (diagnosis based on interpretation of dermoscopic images). Analyses of studies by prior testing revealed no obvious effect on accuracy; analyses were hampered by the lack of studies in primary care, lack of relevant information and the restricted inclusion of lesions selected for biopsy or excision. Accuracy was higher for in-person diagnosis compared to image-based evaluations (relative diagnostic odds ratio (RDOR) 4.6, 95% confidence interval (CI) 2.4 to 9.0; P < 0.001).We compared accuracy for (a), in-person evaluations of dermoscopy (26 evaluations; 23,169 lesions and 1664 melanomas),versus visual inspection alone (13 evaluations; 6740 lesions and 459 melanomas), and for (b), image-based evaluations of dermoscopy (60 evaluations; 13,475 lesions and 2851 melanomas),versus image-based visual inspection (11 evaluations; 1740 lesions and 305 melanomas). For both comparisons, meta-analysis found dermoscopy to be more accurate than visual inspection alone, with RDORs of (a), 4.7 (95% CI 3.0 to 7.5; P < 0.001), and (b), 5.6 (95% CI 3.7 to 8.5; P < 0.001). For a), the predicted difference in sensitivity at a fixed specificity of 80% was 16% (95% CI 8% to 23%; 92% for dermoscopy + visual inspection versus 76% for visual inspection), and predicted difference in specificity at a fixed sensitivity of 80% was 20% (95% CI 7% to 33%; 95% for dermoscopy + visual inspection versus 75% for visual inspection). For b) the predicted differences in sensitivity was 34% (95% CI 24% to 46%; 81% for dermoscopy versus 47% for visual inspection), at a fixed specificity of 80%, and predicted difference in specificity was 40% (95% CI 27% to 57%; 82% for dermoscopy versus 42% for visual inspection), at a fixed sensitivity of 80%.Using the median prevalence of disease in each set of studies ((a), 12% for in-person and (b), 24% for image-based), for a hypothetical population of 1000 lesions, an increase in sensitivity of (a), 16% (in-person), and (b), 34% (image-based), from using dermoscopy at a fixed specificity of 80% equates to a reduction in the number of melanomas missed of (a), 19 and (b), 81 with (a), 176 and (b), 152 false positive results. An increase in specificity of (a), 20% (in-person), and (b), 40% (image-based), at a fixed sensitivity of 80% equates to a reduction in the number of unnecessary excisions from using dermoscopy of (a), 176 and (b), 304 with (a), 24 and (b), 48 melanomas missed.The use of a named or published algorithm to assist dermoscopy interpretation (as opposed to no reported algorithm or reported use of pattern analysis), had no significant impact on accuracy either for in-person (RDOR 1.4, 95% CI 0.34 to 5.6; P = 0.17), or image-based (RDOR 1.4, 95% CI 0.60 to 3.3; P = 0.22), evaluations. This result was supported by subgroup analysis according to algorithm used. We observed higher accuracy for observers reported as having high experience and for those classed as 'expert consultants' in comparison to those considered to have less experience in dermoscopy, particularly for image-based evaluations. Evidence for the effect of dermoscopy training on test accuracy was very limited but suggested associated improvements in sensitivity. AUTHORS' CONCLUSIONS: Despite the observed limitations in the evidence base, dermoscopy is a valuable tool to support the visual inspection of a suspicious skin lesion for the detection of melanoma and atypical intraepidermal melanocytic variants, particularly in referred populations and in the hands of experienced users. Data to support its use in primary care are limited, however, it may assist in triaging suspicious lesions for urgent referral when employed by suitably trained clinicians. Formal algorithms may be of most use for dermoscopy training purposes and for less expert observers, however reliable data comparing approaches using dermoscopy in person are lacking.
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- 2018
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24. Collective Goods and Higher Education Research
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Roger Benjamin
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- 2018
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25. The Framework
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Roger Benjamin
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- 2018
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26. Two Questions About Critical-Thinking Tests
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Roger Benjamin
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- 2018
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27. Leveling the Playing Field From College to Career
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Roger Benjamin
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- 2018
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28. Coda
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Roger Benjamin
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- 2018
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29. The Case for Comparative Institutional Assessment of Higher-Order Thinking Skills
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Roger Benjamin
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- 2018
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30. The Case for Performance-Based Assessments and Critical-Thinking Tests 1
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Roger Benjamin
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Critical thinking ,Psychology ,Cognitive psychology - Published
- 2018
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31. Conclusion
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Roger Benjamin
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- 2018
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32. The Role of Generic Skills in Measuring Academic Quality
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Roger Benjamin
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- 2018
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33. Introduction
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Roger Benjamin
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- 2018
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34. The Focus on Critical-Thinking Skills for the Classroom, the Instructor, and New Sources of Content
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Roger Benjamin
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- 2018
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35. Recreating the Faculty Role in University Governance
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Roger Benjamin
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- 2018
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36. Dermato-informatic approaches to understanding and improving lesional diagnostic expertise in cutaneous oncology
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Aldridge, Roger Benjamin Lochore, Rees, Jonathan, and Wellcome Trust
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skin cancer ,diagnosis ,skin lesions ,dermato-informatics ,early detection ,imaging techniques - Abstract
Cutaneous malignancies represent a quarter of all new cancer diagnoses in the UK. The key to reducing the tumours’ associated mortality and morbidity is early diagnosis and treatment. Prompt diagnosis remains predominately a clinical skill, but relatively little investigation of the cognitive psychology underpinning expertise in this domain has been undertaken. This thesis aims to improve understanding of these processes and investigate how lesional diagnostic expertise might be enhanced. A large database of diagnostically tagged images was captured specifically for this project. A series of separate studies were undertaken to give insight into how lesional diagnosis occurs and how it can be improved. The studies highlighted that non-analytical pattern recognition (NAPR) is likely to predominate in distinguishing malignant and non-malignant skin lesions and that the widely-promoted rules advocating analytical pattern recognition (APR) are not effective for discriminating melanoma from benign pigmented lesions. The keystone to promoting the development of NAPR and thus diagnostic expertise would seem to be increasing a novice’s personal library of examples with relevant feedback. Studies demonstrated that current undergraduate exposure was variable but universally sparse, so simulation by way of diagnostically tagged images was developed which showed accuracy could be improved by increased exposure. This improvement occurred in both a content specific and dose responsive manner. These studies also highlighted that the learning curves for skin lesions are not uniform. Further studies demonstrated that the choice of images had implications on the development of diagnostic expertise; suggesting it was important that these images represent clinical practice rather than “classic” examples traditionally advocated for teaching purposes. In addition, studies highlighted the potential benefit of the 3D models developed during this project. Building on the idea that a personal catalogue of relevant referent images was crucial to enhanced diagnostic accuracy, prototype software was developed to exteriorise the experts’ library of examples; in the tests described novices utilising the software delivered superior accuracy than medical students on the completion of their undergraduate teaching. In summation, the work described shows that by utilising dermato-informatic approaches lesional diagnostic competence can be improved significantly.
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- 2018
37. Methodological challenges in international comparative post-secondary assessment programs: lessons learned and the road ahead
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Doris Zahner, Raffaela Wolf, and Roger Benjamin
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Medical education ,Test design ,Higher education ,Recall ,business.industry ,Factual knowledge ,Popularity ,Education ,Educational research ,Pedagogy ,Cross-cultural ,Adaptation (computer science) ,business ,Psychology - Abstract
The assessment of student learning outcomes in the tertiary school sector has seen an increase in global popularity in recent years. Measurement instruments that target higher order skills are on the rise, whereas assessments that foster the recall of factual knowledge are declining. The Assessment of Higher Education Learning Outcomes (AHELO) project was designed with the goal of developing a cross-national concept for valid assessment of generic and domain-specific student learning outcomes on an international comparative basis. AHELO and other international comparative assessment systems face numerous methodological challenges that pertain to test design and development, translation, adaptation, student sampling, scoring, reporting, and the validity of score interpretations. The goal of this paper is to generate ideas for the improvement of cross-national research agendas, such as the AHELO project. The main purpose is to focus on the lessons learned from the AHELO feasibility study and other internati...
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- 2015
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38. Tom Roberts and Friends at the Alhambra
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Emilio Escoriza, Roger Benjamin, and Emma Kindred
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Landscape painting ,media_common.quotation_subject ,Art history ,General Medicine ,Art ,media_common - Abstract
The visit of the young Tom Roberts to the Alhambra Palace in Granada has long been considered a foundational moment for the future ‘father of Australian landscape painting’. Exposure to the bright ...
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- 2015
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39. Hilda Rix Nicholas and Elsie Rix's Moroccan Idyll: Art and Orientalism, by Jeanette Hoorn
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Roger Benjamin
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Idyll ,Painting ,media_common.quotation_subject ,Media studies ,Orientalism ,Art history ,General Medicine ,Art ,media_common - Abstract
There are few places more remote from Melbourne than Tangiers. Yet when the young Australian painter Hilda Rix visited there in search of fresh subjects in 1912, she encountered the familiar sight ...
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- 2014
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40. Two Questions About Critical-Thinking Tests in Higher Education
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Roger Benjamin
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Higher education ,business.industry ,Context effect ,Teaching method ,Standardized test ,General Medicine ,Critical thinking ,Evaluation methods ,ComputingMilieux_COMPUTERSANDEDUCATION ,Mathematics education ,business ,Psychology ,Outcome-based education ,Discipline - Abstract
In ShortCritical-thinking skills are applicable over an array of academic disciplines and can be both improved by teaching and assessed.Standardized tests of such skills have the advantage of being...
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- 2014
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41. Using the Collegiate Learning Assessment to Address the College-to-Career Space
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Doris Zahner, Zachary Kornhauser, Roger Benjamin, Jeffrey T. Steedle, and Raffaela Wolf
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ComputingMilieux_THECOMPUTINGPROFESSION ,Multimedia ,Computer science ,ComputingMilieux_COMPUTERSANDEDUCATION ,Mathematics education ,Learning assessment ,Space (commercial competition) ,computer.software_genre ,computer - Abstract
Issues in higher education, such as the rising cost of education, career readiness, and increases in the achievement gap have led to a movement toward accountability in higher education. This chapter addresses the issues related to career readiness by highlighting an assessment tool, the Collegiate Learning Assessment (CLA), through two case studies. The first examines the college-to-career space by comparing different alternatives for predicting college success as measured by college GPA. The second addresses an identified market failure of highly qualified college graduates being overlooked for employment due to a matching problem. The chapter concludes with a proposal for a solution to this problem, namely a matching system.
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- 2016
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42. Colliding Landscapes: Dunhuang Cave Temples and the Tim Johnson System
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Roger Benjamin
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Painting ,Copying ,Interpretation (philosophy) ,media_common.quotation_subject ,Art history ,Identity (social science) ,Sincerity ,General Medicine ,Postmodernism ,Appropriation ,Law ,Sociology ,Citation ,media_common - Abstract
When is a painted copy no longer a copy? When it deviates so far from the original that the copy achieves its own separate identity as an interpretation. That is the condition proposed by the best-known painting in the oeuvre of the prolific Australian painter Tim Johnson. His Illusory City (1983-5) was based on a source so obscure that few would have grasped they were dealing with a work of citation. In this, it was unlike much 1980s Australian appropriation art, which played upon the possibility that viewers would recognise and relish a series of witty or trenchant visual citations. Instead, in the sincerity of his homage to other cultures - Chinese and Aboriginal - and the completeness of his pictorial transformation of their ways of making images, Johnson's practice smacks as much of the high modern japonaiserie of Vincent van Gogh or the cubist copying of old masters by Juan Gris as it does the homeless postmodern borrowings of David Salle or Imants Tillers.
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- 2012
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43. Preface
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Roger Benjamin
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General Medicine - Published
- 2014
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44. Mark L Clifford. The Greening of Asia: The Business Case for Solving Asia’s Environmental Emergency
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Roger Benjamin
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Economics and Econometrics ,Greening ,Economy ,Political science ,Political Science and International Relations ,Geography, Planning and Development ,Business case ,Law - Published
- 2016
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45. The Environment of American Higher Education: A Constellation of Changes
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Roger Benjamin
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Sociology and Political Science ,Inequality ,Higher education ,business.industry ,Knowledge economy ,media_common.quotation_subject ,Immigration ,General Social Sciences ,Public administration ,Human capital ,Blueprint ,Political economy ,Institution ,Sociology ,Education policy ,business ,media_common - Abstract
The American university is one of society’s key institutions, perhaps the lead institution available today to respond to changing societal imperatives. However, for the university to continue to play a leading role, it is important to match the functions of the institution with the societal imperatives presented by a changed environment. In short, for purposeful, intelligent redesign of the university to take place, new blueprints for changes in the role of the university must be constructed. This article aims at such a blueprint. A heterogeneous set of changes in the environment—globalization, immigration, rising social-economic inequality, centrality of the knowledge economy, and issues surrounding cultural identity—are the new changes that will transform the American university in coming decades. The implications of each of the challenges, particularly the recognition that the university must take a stronger responsibility to improve the nation’s human capital, are discussed.
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- 2003
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46. Abstracts
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Andrew Montana, Stuart King, Roger Benjamin, Susan Holden, and Dijana Alic
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Urban Studies ,Visual Arts and Performing Arts - Published
- 2012
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47. Response to Rejoinder
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Roger Benjamin
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General Medicine - Published
- 2017
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48. Colonial Panoramania
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Roger Benjamin
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- 2014
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49. Ingres Chez Les Fauves
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Roger Benjamin
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Painting ,Visual Arts and Performing Arts ,Judaism ,media_common.quotation_subject ,Line drawings ,Art history ,Art ,Visual orientation ,Visual arts ,PICASSO ,Authority figure ,Salon ,Classicism ,media_common - Abstract
The Bain turc, more than any other Ingres work, escaped the claims of normative art history and spoke to a radical aesthetic community intent on framing a new art. This essay on the reception of Ingres's figure painting reads responses to the Bain turc at the small Ingres retrospective the Society of the Salon d'Automne organized in 1905, and in 1907 when his Grande Odalisque was challenged by the elevation of Manet's Olympia to the Louvre. Three communities laid claim to Ingres at this time. Scholars like Lapauze and Mommeja ratified the Bain turc for the museum community and for its owner, the Prince de Broglie. The Fauvist avant garde had other goals in arranging the retrospective. It is argued that the Bain turc, and the two dozen pencil studies exhibited with it, changed the visual orientation of artists such as Picasso, Matisse and Vallotton. The third group, standing between the artists and official gate-keepers, were the critics. Some claimed Ingres for classicism and the French Tradition (albeit one skewed by an octagenarian's sexual longing). Left and Jewish critics close to the Salon rejected the academic authority figure, proclaiming the value of his nudes, line drawing and distorting arabesque. The debate crystallized when Olympia was hung opposite the Grande Baigneuse. Matisse and Apollinaire judged the Manet to be passe, and soon afterwards the pro-Cubist writers Riviere and Lhote saw in the Grande Baigneuse the model for a revolution in the concept of drawing.
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- 2000
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50. The importance of a full clinical examination: assessment of index lesions referred to a skin cancer clinic without a total body skin examination would miss one in three melanomas
- Author
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Ee Ting Ooi, Jonathan L. Rees, Caroline S. Murray, Lisa Naysmith, and Roger Benjamin Aldridge
- Subjects
Adult ,Male ,medicine.medical_specialty ,Teledermatology ,Skin Neoplasms ,Adolescent ,Biopsy ,Physical examination ,Dermatology ,Hospitals, General ,Article ,total body skin examination ,Young Adult ,Predictive Value of Tests ,melanoma ,Medicine ,Humans ,tele-dermatology ,Prospective Studies ,Diagnostic Errors ,Prospective cohort study ,Hospitals, Teaching ,Melanoma ,Physical Examination ,Referral and Consultation ,Secondary Care Centers ,Aged ,Aged, 80 and over ,Incidental Findings ,skin cancer ,medicine.diagnostic_test ,Index Lesion ,business.industry ,screening ,General Medicine ,Middle Aged ,medicine.disease ,Hospitals, District ,Surgery ,Scotland ,Predictive value of tests ,Female ,Skin cancer ,business - Abstract
Traditional clinical teaching emphasises the importance of a full clinical examination. In the clinical assessment of lesions that may be skin cancer, full examination allows detection of incidental lesions, as well as helpingin the characterisation of the index lesion. Despite this, a total body skin examination is not always performed. Based on two prospective studies of over 1,800 sequential patients in two UK centres we show that over onethird of melanomas detected in secondary care are found as incidental lesions, in patients referred for assessment of other potential skin cancers. The majority of these melanomas occurred in patients whose index lesion turnedout to be benign. Alternative models of care – for instance some models of teledermatology in which a total body skin examination is not performed by a competent practitioner – cannot be considered equivalent to a traditionalconsultation and, if adopted uncritically, without system change, will likely lead to melanomas being missed.
- Published
- 2013
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