44 results on '"JOHR R"'
Search Results
2. Uso de la dermoscopia en el diagnóstico del cáncer de piel
- Author
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JOHR, R, primary
- Published
- 2006
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- View/download PDF
3. Eccrine porocarcinoma: clinical evaluation with dermoscopy – excision using Mohs technique
- Author
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Johr, R., Saghari, S., and Keyvan, N.
- Published
- 2003
4. Nevi with particular pigmentation: Black, pink, and white nevus
- Author
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Zalaudek, I, Leinweber, B, Johr, R, Soyer HP, Argenziano G, Hofmann-Wellenhof R, Johr R., Zalaudek, I, Leinweber, B, and Johr, R
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Medicine (all) - Published
- 2007
5. Color Atlas of Melanocytic Lesions of the Skin
- Author
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SOYER HP, HOFMANN WELLENHOF R, JOHR R. EDITORS, ARGENZIANO, Giuseppe, Soyer, Hp, Argenziano, Giuseppe, HOFMANN WELLENHOF, R, and JOHR R., Editors
- Published
- 2007
6. DERMOSCOPY: THE ESSENTIALS
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JOHR R, SOYER HP, HOFMANNWELLENHOF R, SCALVENZI M., ARGENZIANO, Giuseppe, Johr, R, Soyer, Hp, Argenziano, Giuseppe, Hofmannwellenhof, R, and Scalvenzi, M.
- Published
- 2004
7. The Use of Dermoscopy in the Diagnosis of Skin Cancer
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Johr, R, Argenziano, G, Zalaudek, I, Rigel DS, Friedman R, Dzubow LM, Reintgen DS, Bystryn JC, Marks R, Johr, R, Argenziano, G, Zalaudek, I, RIGEL DS, FRIEDMAN R, DZUBOW LM, REINTGEN DS, MOFFITT HL, BYSTRYN JC, MARKS R, Johr, Rh, Argenziano, Giuseppe, and Zalaudek, I.
- Published
- 2004
8. Dermoscopy key points: recommendations from the international dermoscopy society
- Author
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Bowling, J, Argenziano, G, Azenha, A, Bandic, J, Bergman, R, Blum, A, Cabo, H, Di Stephani, A, Grichnik, J, Halpern, A, Hofman Wellenhof, R, Johr, R, Kittler, H, Kopf, A, Kreusch, J, Langford, D, Malvehy, J, Marghoob, A, Menzies, S, Ozdemir, F, Peris, Ketty, Piccolo, D, Pizzichetta, Ma, Polsky, D, Puig, S, Rabinovitz, H, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Soyer, Hp, Tanaka, M, Zalaudek, I, Braun, Rp, Peris, Ketty (ORCID:0000-0002-5237-0463), Bowling, J, Argenziano, G, Azenha, A, Bandic, J, Bergman, R, Blum, A, Cabo, H, Di Stephani, A, Grichnik, J, Halpern, A, Hofman Wellenhof, R, Johr, R, Kittler, H, Kopf, A, Kreusch, J, Langford, D, Malvehy, J, Marghoob, A, Menzies, S, Ozdemir, F, Peris, Ketty, Piccolo, D, Pizzichetta, Ma, Polsky, D, Puig, S, Rabinovitz, H, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Soyer, Hp, Tanaka, M, Zalaudek, I, Braun, Rp, and Peris, Ketty (ORCID:0000-0002-5237-0463)
- Abstract
N/A
- Published
- 2007
9. Dermoscopy of pigmented skin lesions: results of a consensus meeting via the Internet
- Author
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Argenziano, G, Soyer, Hp, Chimenti, S, Talamini, R, Corona, R, Sera, F, Binder, M, Cerroni, L, De Rosa, G, Ferrara, G, Hofmann Wellenhof, R, Landthaler, M, Menzies, Sw, Pehamberger, H, Piccolo, D, Rabinovitz, H, Schiffner, R, Staibano, S, Stolz, W, Bartenjev, I, Blum, A, Braun, R, Cabo, H, Carli, P, De Giorgi, V, Fleming, Mg, Grichnik, Jm, Grin, Cm, Halpern, Ac, Johr, R, Katz, B, Kenet, Ro, Kittler, H, Kreusch, J, Malvehy, J, Mazzocchetti, G, Oliviero, M, Ozdemir, F, Peris, Ketty, Perotti, R, Perusquia, A, Pizzichetta, Ma, Puig, S, Rao, B, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Stanganelli, I, Tanaka, M, Westerhoff, K, Wolf, Ih, Braun Falco, O, Kerl, H, Nishikawa, T, Wolff, K, Kopf, Aw, Peris, Ketty (ORCID:0000-0002-5237-0463), Argenziano, G, Soyer, Hp, Chimenti, S, Talamini, R, Corona, R, Sera, F, Binder, M, Cerroni, L, De Rosa, G, Ferrara, G, Hofmann Wellenhof, R, Landthaler, M, Menzies, Sw, Pehamberger, H, Piccolo, D, Rabinovitz, H, Schiffner, R, Staibano, S, Stolz, W, Bartenjev, I, Blum, A, Braun, R, Cabo, H, Carli, P, De Giorgi, V, Fleming, Mg, Grichnik, Jm, Grin, Cm, Halpern, Ac, Johr, R, Katz, B, Kenet, Ro, Kittler, H, Kreusch, J, Malvehy, J, Mazzocchetti, G, Oliviero, M, Ozdemir, F, Peris, Ketty, Perotti, R, Perusquia, A, Pizzichetta, Ma, Puig, S, Rao, B, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Stanganelli, I, Tanaka, M, Westerhoff, K, Wolf, Ih, Braun Falco, O, Kerl, H, Nishikawa, T, Wolff, K, Kopf, Aw, and Peris, Ketty (ORCID:0000-0002-5237-0463)
- Abstract
There is a need for better standardization of the dermoscopic terminology in assessing pigmented skin lesions.
- Published
- 2003
10. Dermoscopy Key Points: Recommendations from the International Dermoscopy Society
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Bowling, J., primary, Argenziano, G., additional, Azenha, A., additional, Bandic, J., additional, Bergman, R., additional, Blum, A., additional, Cabo, H., additional, Di Stephani, A., additional, Grichnik, J., additional, Halpern, A., additional, Hofman-Wellenhof, R., additional, Johr, R., additional, Kittler, H., additional, Kopf, A., additional, Kreusch, J., additional, Langford, D., additional, Malvehy, J., additional, Marghoob, A., additional, Menzies, S., additional, Ozdemir, F., additional, Peris, K., additional, Piccolo, D., additional, Pizzichetta, M.A., additional, Polsky, D., additional, Puig, S., additional, Rabinovitz, H., additional, Rubegni, P., additional, Saida, T., additional, Scalvenzi, M., additional, Seidenari, S., additional, Soyer, H.P., additional, Tanaka, M., additional, Zalaudek, I., additional, and Braun, R.P., additional
- Published
- 2006
- Full Text
- View/download PDF
11. Babies and Rashes
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Johr, R H, primary and Schachner, L A, additional
- Published
- 1997
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12. Neonatal Dermatologic Challenges
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Johr, R. H., primary and Schachner, L. A., additional
- Published
- 1997
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13. Question from the clinician. Use of topical hydrocortisone.
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Menna, V J, Johr, R H, and Schachner, L A
- Published
- 1999
14. Altering the Properties of Graphene on Cu(111) by Intercalation of Potassium Bromide
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Schulzendorf, Mathias, Hinaut, Antoine, Kisiel, Marcin, Jöhr, Res, Pawlak, Rémy, Restuccia, Paolo, Meyer, Ernst, Righi, Maria Clelia, Glatzel, Thilo, Schulzendorf M., Hinaut A., Kisiel M., Johr R., Pawlak R., Restuccia P., Meyer E., Righi M. C., and Glatzel T.
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KPFM ,Technology ,GRAPHITE ,Coulomb blockade ,Chemistry, Multidisciplinary ,Materials Science ,Materials Science, Multidisciplinary ,DFT ,FORCE ,intercalation ,MD Multidisciplinary ,Nanoscience & Nanotechnology ,EPITAXIAL GRAPHENE ,Science & Technology ,Chemistry, Physical ,graphene ,KBr ,nc-AFM ,Chemistry ,ELECTRONIC-STRUCTURE ,GAS ,Physical Sciences ,TIP ,Science & Technology - Other Topics ,GROWTH - Abstract
The catalytic growth on transition metal surfaces provides a clean and controllable route to obtain defect-free, monocrystalline graphene. However, graphene's optical and electronic properties are diminished by the interaction with the metal substrate. One way to overcome this obstacle is the intercalation of atoms and molecules decoupling the graphene and restoring its electronic structure. We applied noncontact atomic force microscopy to study the structural and electric properties of graphene on clean Cu(111) and after the adsorption of KBr or NaCl. By means of Kelvin probe force microscopy, a change in graphene's work function has been observed after the deposition of KBr, indicating a changed graphene-substrate interaction. Further measurements of single-electron charging events as well as X-ray photoelectron spectroscopy confirmed an electronic decoupling of the graphene islands by KBr intercalation. The results have been compared with density functional theory calculations, supporting our experimental findings.
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- 2019
15. Dermoscopic evaluation of amelanotic and hypomelanotic melanoma
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Luc Thomas, Susana Puig, Maria Antonietta Pizzichetta, Giuseppe Argenziano, H. P. Soyer, D. Langford, Robert H. Johr, Riccardo Bono, G. Pagnanelli, Perusquia Am, Pascale Guitera, Scott W. Menzies, A.A. Marghoob, H. Rabinovitz, Domenico Piccolo, Ignazio Stanganelli, Giovanni Pellacani, Michelle Avramidis, Iris Zalaudek, J. Kreusch, Ahlgrimm-Siess, Alex Llambrich, Ralph P. Braun, G. Ghigliotti, Horacio Cabo, Josep Malvehy, Karen Byth, M. Oliviero, Karin Terstappen, Masaru Tanaka, University of Zurich, Menzies, Sw1, Kreusch, J, Byth, K, Pizzichetta, Ma, Marghoob, A, Braun, R, Malvehy, J, Puig, S, Argenziano, G, Zalaudek, I, Rabinovitz, H, Oliviero, M, Cabo, H, Ahlgrimm-Siess, V, Avramidis, M, Guitera, P, Soyer, Hp, Ghigliotti, G, Tanaka, M, Perusquia, Am, Pagnanelli, G, Bono, R, Thomas, L, Pellacani, G, Langford, D, Piccolo, D, Terstappen, K, Stanganelli, I, Llambrich, A, Johr, R., Menzies, Sw, Argenziano, Giuseppe, and Ahlgrimm Siess, V
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medicine.medical_specialty ,Pathology ,Skin Neoplasms ,Predictive Value of Test ,610 Medicine & health ,Dermoscopy ,Skin Pigmentation ,Dermatology ,Diagnosis, Differential ,Humans ,Melanoma ,Melanoma, Amelanotic ,Models, Biological ,Observer Variation ,Predictive Value of Tests ,Sensitivity and Specificity ,Malignancy ,Breslow Thickness ,2708 Dermatology ,Depigmentation ,Models ,Diagnosis ,medicine ,Skin Neoplasm ,business.industry ,10177 Dermatology Clinic ,General Medicine ,Odds ratio ,medicine.disease ,Amelanotic ,Biological ,Confidence interval ,Predictive value of tests ,Differential ,medicine.symptom ,Differential diagnosis ,business ,melanoma ,dermoscopy ,Human - Abstract
Objective To determine the predictive dermoscopic features of amelanotic and hypomelanotic melanoma. Design A total of 105 melanomas (median Breslow thickness, 0.76 mm), 170 benign melanocytic lesions, and 222 nonmelanocytic lesions lacking significant pigment (amelanotic, partially pigmented, and light colored) were imaged using glass-plate dermoscopy devices and scored for 99 dermoscopic features. Diagnostic models were derived from and tested on independent randomly selected lesions. Setting Predominantly hospital-based clinics from 5 continents. Main Outcome Measures Sensitivity, specificity, and odds ratios for individual features and models for the diagnosis of melanoma and malignancy. Results The most significant negative predictors of melanoma were having multiple (>3) milialike cysts (odds ratio, 0.09; 95% confidence interval, 0.01-0.64), comma vessels with a regular distribution (0.10; 0.01-0.70), comma vessels as the predominant vessel type (0.16; 0.05-0.52), symmetrical pigmentation pattern (0.18; 0.09-0.39), irregular blue-gray globules (0.20; 0.05-0.87), and multiple blue-gray globules (0.28; 0.10-0.81). The most significant positive predictors were having a blue-white veil (odds ratio,13; 95% confidence interval, 3.9-40.0), scarlike depigmentation (4.4; 2.4-8.0), multiple blue-gray dots (3.5; 1.9-6.4), irregularly shaped depigmentation (3.3; 2.0-5.3), irregular brown dots/globules (3.2; 1.8-5.6), 5 to 6 colors (3.2; 1.6-6.3), and predominant central vessels (3.1; 1.6-6.0). A simple model distinguishing melanomas from all nonmelanomas had a sensitivity of 70% and a specificity of 56% in the test set. A model distinguishing all malignant lesions from benign lesions had a sensitivity of 96% and a specificity of 37%. Conclusion Although the diagnostic accuracy of dermoscopy for melanoma lacking significant pigment is inferior to that of more pigmented lesions, features distinguishing the former from benign lesions can be visualized on dermoscopic evaluation. Pure amelanotic primary melanoma of the skin is rare, with the largest series suggesting an incidence of less than 2% of melanomas (although this figure is inflated because amelanotic metastases were included in the study).1 Because evidence of melanin is usually found in amelanotic melanoma histopathologically,2 the difficulty in diagnosing these lesions lies with the clinician and not the pathologist, and a precise clinical definition of melanoma lacking significant pigment would be most useful. Furthermore, since dermoscopic evaluation allows the visualization of pigment not seen with the naked eye, a dermoscopic definition of lesions lacking significant pigment would be most useful and is presented in our study. Although dermoscopic evaluation has been shown to improve the accuracy of pigmented melanoma diagnosis compared with naked eye examination,3 less literature is found regarding melanomas lacking significant pigment.4-8 Still, dermoscopic evaluation has been shown to be superior to naked eye examination for the diagnosis of amelanotic or hypomelanotic melanoma.4 To assess the diagnostic significance of dermoscopic features in these lesions, a large series of melanomas as well as nonmelanocytic and benign melanocytic lesions lacking significant pigment was examined.
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- 2008
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16. Nevus Type in Dermoscopy Is Related to Skin Type in White Persons
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D. Langford, Helmut Kerl, Elvira Moscarella, Francesco Sera, Rainer Hofmann-Wellenhof, Iris Zalaudek, Josep Malvehy, Susana Puig, Andreas Blum, Giuseppe Argenziano, A Sgambato, Rosamaria Corona, H. Peter Soyer, Robert H. Johr, Horacio Cabo, Isabel Kolm, Alessandro Di Stefani, Ines Mordente, Zalaudek, I, Argenziano, Giuseppe, Mordente, I, Moscarella, E, Corona, R, Sera, F, Blum, A, Cabo, H, Di Stefani, A, Hofmann Wellenhof, R, Johr, R, David, L, Malvehy, J, Kolm, I, Sgambato, A, Puig, S, Soyer, Hp, and Kerl, H.
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Adult ,Male ,medicine.medical_specialty ,Skin Neoplasms ,Adolescent ,Dermoscopy ,Dermatology ,Logistic regression ,White People ,Humans ,Medicine ,Nevus ,Child ,Aged ,Hypopigmentation ,Aged, 80 and over ,Nevus, Pigmented ,Dermatoscopy ,Univariate analysis ,medicine.diagnostic_test ,business.industry ,General Medicine ,Odds ratio ,Middle Aged ,medicine.disease ,Phototype ,Hyperpigmentation ,Female ,medicine.symptom ,business - Abstract
Background: Dermoscopic classification of acquired melanocytic nevi (AMN) is based on the evaluation of 3 main criteria-global pattern, pigment distribution, and color. Objective: To determine whether these features are different in AMN in white people with different skin types (STs) according to the Fitzpatrick classification. Design: Digital dermoscopic images of AMN were evaluated, and the correlation of the 3 main dermoscopic criteria with patient ST was analyzed. Setting: Consecutive patients were recruited from 7 pigmented lesion clinics between june 1, 2004, and june 30, 2005. Patients: For each patient, the ST (I [always burns, never tans] to IV [rarely burns, tans with ease]) was scored, and 1 representative AMN (defined as the AMIN showing a dermoscopic typology that is repeatedly seen in the same patient) was selected and photographed. Main Outcome Measures: The distribution of the dermoscopic criteria of AMN in patients with different STs was calculated by univariate analysis. Differences in prevalence were tested using the chi(2) test. The correlation between dermoscopic criteria and ST, adjusted for age, sex, and enrolling center, was evaluated by calculating odds ratios and 95% confidence intervals by logistic regression analysis. Results: Of 680 included patients, dermoscopic analysis revealed significant differences in the prevalent nevus pattern in the 4 ST groups. Light brown AMN with central hypopigmentation were associated with ST I, and ST IV was associated with the so-called black nevus (P
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- 2007
17. Dermoscopy features of melanoma incognito: Indications for biopsy
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Susana Puig, Iris Zalaudek, Gerardo Ferrara, Robert H. Johr, Josep Malvehy, H. Peter Soyer, Giuseppe Argenziano, D. Langford, Argenziano, Giuseppe, Zalaudek, I, Ferrara, G, Johr, R, Langford, D, Puig, S, Soyer, Hp, and Malvehy, J.
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Adult ,medicine.medical_specialty ,Skin Neoplasms ,Adolescent ,Biopsy ,Dermoscopy ,Context (language use) ,Dermatology ,Diagnosis, Differential ,medicine ,Humans ,Nevus ,In patient ,Melanoma ,Nevus, Pigmented ,Dermatoscopy ,medicine.diagnostic_test ,business.industry ,Middle Aged ,medicine.disease ,Carcinoma, Basal Cell ,Female ,Differential diagnosis ,business ,Multiple nevi - Abstract
Background To avoid missing melanoma, the current practice is to biopsy all suggestive skin lesions. Although most cases of melanoma exhibit clinical clues leading to the correct diagnosis, melanoma can mimic benign lesions. Dermoscopy has been shown to increase the diagnostic accuracy of clinically equivocal lesions, but little is known about its ability to detect melanoma in the context of lesions that appear clinically benign. Methods We present 7 difficult-to-diagnose melanomas, in which additional clues provided by dermoscopy increased the index of suggestion and led us to perform a biopsy. Results Our cases highlight the following 7 management rules: 1) Dermoscopy should not be used only for suggestive skin lesions. 2) Biopsy lesions missing clinicodermoscopic correlation. 3) Biopsy lesions with unspecific pigment pattern. 4) Biopsy lesions with spitzoid features. 5) Biopsy lesions with extensive regression features. 6) In patients with multiple nevi, biopsy lesions changing after short-term follow-up. 7) Biopsy pink lesions with an atypical vascular pattern. Limitations The reported series of cases is small. Dermoscopy has not been rigorously compared with handheld magnification (as with a ×7 loupe). Conclusions Dermoscopy can increase the index of suggestion to perform biopsy in difficult-to-diagnose melanomas.
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- 2007
18. Squamous cell carcinoma including Actinic Keratosis, Bowen’s Disease and Keratoacanthoma and Its Pigmented Variant
- Author
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Zalaudek, I, Giacomel, Js, Leinweber, B, Soyer HP, Argenziano G, Hofmann- Wellenhof R, Johr R., Zalaudek, I, Giacomel, J, and Leinweber, B
- Published
- 2007
19. False-negative melanomas
- Author
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Giuseppe Argenziano, Robert H. Johr, Soyer, H.P., Argenziano, G., Hofmann-Wellenhof, R., Johr, R.H., Johr, R., and Argenziano, G.
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medicine.medical_specialty ,Metastatic melanoma ,business.industry ,Melanoma ,fungi ,food and beverages ,Diagnostic accuracy ,Papule ,Nodule (medicine) ,medicine.disease ,Dermatology ,medicine ,medicine.symptom ,Amelanotic melanoma ,business ,Clinical evaluation - Abstract
It has been reported that amelanotic melanoma is the great masquerader; however, any melanoma has the potential to fool the most experienced clinician. It is not possible to make the diagnosis 100% of the time no matter what clinical aids one uses. Experienced clinicians can diagnose melanoma clinically 60–75% of the time. In a metaanalysis it was shown that the diagnostic accuracy can be improved by as much as 49% with dermoscopy. The sensitivity of clinical evaluation plus dermoscopy can be as high as 97%. As many as 15% of melanomas can be false negative, mimicking melanocytic and non-melanocytic lesions or non-melanoma skin cancers. At times, the only way to suspect the diagnosis is by finding clinical and/or dermoscopic changes over time. In general, false-negative melanoma incognito could be a solitary macule, papule, nodule, or plaque that can have a smooth or scaly surface with or without ulceration. Polymorphous lesions can be seen with cutaneous metastatic melanoma. A single relatively innocuous color or multiple colors can be present with various shades of black, brown, gray, or blue. The ABCD clinical Chapter IV.5
- Published
- 2007
20. Irritated Nevus and Meyerson’s Nevus
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Fink-Puches, R, Zalaudek, I, Hofmann-Wellenhof, R, Soyer HP, Argenziano G, Hofmann-Wellenhof R, Johr R, Fink-Puches, R, Zalaudek, I, and Hofmann-Wellenhof, R
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Medicine (all) - Published
- 2007
21. Scalp Melanoma
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Zalaudek I, Giacomel JS, Leinweber B, Soyer HP, Argenziano G, Hofmann-Wellenhof R, Johr R, Zalaudek, I, Giacomel, J, and Leinweber, B
- Subjects
Medicine (all) - Published
- 2007
22. Dermoscopy key points: recommendations from the international dermoscopy society
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Masaru Tanaka, J. Kreusch, D. Langford, Ralph P. Braun, Stefania Seidenari, David Polsky, Fezal Ozdemir, A Di Stephani, Iris Zalaudek, Horacio Cabo, Giuseppe Argenziano, Massimiliano Scalvenzi, Domenico Piccolo, Toshiaki Saida, J Bandic, R Hofman-Wellenhof, H. Rabinovitz, Allan C. Halpern, Ketty Peris, A Azenha, Robert H. Johr, Josep Malvehy, Jonathan Bowling, Pietro Rubegni, Harald Kittler, Susana Puig, Maria Antonietta Pizzichetta, H. P. Soyer, A.A. Marghoob, Andreas Blum, R Bergman, James M. Grichnik, Alfred W. Kopf, Scott W. Menzies, Bowling, J, Argenziano, Giuseppe, Azenha, A, Bandic, J, Bergman, R, Blum, A, Cabo, H, Di Stephani, A, Grichnik, J, Halpern, A, Hofman Wellenhof, R, Johr, R, Kittler, H, Kopf, A, Kreusch, J, Langford, D, Malvehy, J, Marghoob, A, Menzies, S, Ozdemir, F, Peris, K, Piccolo, D, Pizzichetta, Ma, Polsky, D, Puig, S, Rabinovitz, H, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Soyer, Hp, Tanaka, M, Zalaudek, I, Braun, Rp, Argenziano, G, DI STEPHANI, A, HOFMAN WELLENHOF, R, Scalvenzi, Massimiliano, Hofman-Wellenhof, R, Peris, Ketty, Pizzichetta, M A, Soyer, H P, and Braun, R P
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medicine.medical_specialty ,business.industry ,MEDLINE ,Library science ,Dermoscopy ,Humans ,Dermatology ,Practice Guidelines as Topic ,Societies, Medical ,Medical ,dermoscopy ,melanoma ,medicine ,Key (lock) ,guidelines ,Societies ,business ,Human - Abstract
The dermoscopy era is developing momentum. Our greater understanding of the morphological features seen with dermoscopy has corresponded with an exponential rise in dermoscopy publications. Publications have in- cluded conditions as diverse as inf lammatory and in- fective dermatoses, alongside reports of tumours and pigmented and non-pigmented skin lesions. The ter- minology used for describing structures seen under dermoscopy have been standardized by consensus and previously published [1] . The 2-step algorithm for differ- entiating melanocytic from non-melanocytic tumours has become the foundation on which dermoscopic diag- nosis depends. Furthermore, several algorithms are cur- rently in use to help differentiate between benign and malignant melanocytic neoplasms [1] .
- Published
- 2006
23. Dermoscopy of pigmented skin lesions: Results of a consensus meeting via the Internet
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Andreas Blum, Robert O. Kenet, Takeji Nishikawa, Allan C. Halpern, Vincenzo De Giorgi, Helmut Kerl, Brian Katz, Sergio Chimenti, Rosamaria Corona, Pietro Rubegni, Paolo Carli, Domenico Piccolo, Francesco Sera, Toshiaki Saida, Robert H. Johr, Michael Landthaler, Renato Talamini, Rainer Hofmann-Wellenhof, Klaus Wolff, Roberto Perotti, Gerardo Ferrara, Ralph P. Braun, Lorenzo Cerroni, Stefania Seidenari, James M. Grichnik, Massimiliano Scalvenzi, Giuseppe Argenziano, Horacio Cabo, Masaru Tanaka, Michael Binder, Ana Perusquia, Karin Westerhoff, Margaret Oliviero, Otto Braun-Falco, Scott W. Menzies, Ignazio Stanganelli, Harald Kittler, Josep Malvehy, Igor Bartenjev, Harold S. Rabinovitz, Ketty Peris, Alfred W. Kopf, Hubert Pehamberger, Caron M. Grin, Gaetano De Rosa, Babar Rao, Susana Puig, Maria Antonietta Pizzichetta, G. Mazzocchetti, Jürgen Kreusch, H. Peter Soyer, R. Schiffner, Matthew G. Fleming, Stefania Staibano, Fezal Ozdemir, Wilhelm Stolz, Ingrid H. Wolf, Argenziano, Giuseppe, Soyer, Hp, Chimenti, S, Talamini, R, Corona, R, Sera, F, Binder, M, Cerroni, L, De Rosa, G, Ferrara, G, Hofmann Wellenhof, R, Landthater, M, Menzies, Sw, Pehamberger, H, Piccolo, D, Rabinovitz, H, Schiffner, R, Staibano, S, Stolz, W, Bartenjev, I, Blum, A, Braun, R, Cabo, H, Carli, P, De Giorgi, V, Fleming, Mg, Grichnik, Jm, Grin, Cm, Halpern, Ac, Johr, R, Katz, B, Kenet, Ro, Kittler, H, Kreusch, J, Malvehy, J, Mazzocchetti, G, Oliviero, M, Ozdemir, F, Peris, K, Perotti, R, Perusquia, A, Pizzichetta, Ma, Puig, S, Rao, B, Rubegni, P, Saida, T, Scalvenzi, M, Seidenari, S, Stanganelli, I, Tanaka, M, Westerhoff, K, Wolf, Ih, Braun Falco, O, Kerl, H, Nishikawa, T, Wolff, K., Argenziano, G, DE ROSA, Gaetano, Landthaler, M, Staibano, Stefania, Scalvenzi, Massimiliano, Wolff, K, and Kopf, Aw
- Subjects
medicine.medical_specialty ,Skin Neoplasms ,diagnosis/pathology, Diagnosi ,Diagnostic methods ,Log odds ,Basal Cell ,Pattern analysis ,Dermoscopy ,Skin Pigmentation ,Differential, Humans, Internet, Melanoma ,Dermatology ,consensus meeting ,Sensitivity and Specificity ,Skin Diseases ,Likelihood ratios in diagnostic testing ,Diagnosis, Differential ,Reference Values ,Terminology as Topic ,Photography ,medicine ,Humans ,Melanoma ,Algorithms, Carcinoma ,dermoscopy ,pigmented skin lesions ,diagnosis/pathology, Skin Neoplasm ,classification/diagnosis/pathology, Skin Pigmentation, Terminology as Topic ,Internet ,Microscopy ,Dermatoscopy ,methods/standards, Photography, Practice Guidelines as Topic, Reference Values, Sensitivity and Specificity, Skin Disease ,medicine.diagnostic_test ,business.industry ,Diagnostic algorithms ,Abcd rule ,Carcinoma, Basal Cell ,Practice Guidelines as Topic ,classification/diagnosis/pathology, Microscopy ,Pigmented skin ,business ,Algorithms - Abstract
Background: There is a need for better standardization of the dermoscopic terminology in assessing pigmented skin lesions. Objective: The virtual Consensus Net Meeting on Dermoscopy was organized to investigate reproducibility and validity of the various features and diagnostic algorithms. Methods: Dermoscopic images of 108 lesions were evaluated via the Internet by 40 experienced dermoscopists using a 2-step diagnostic procedure. The first-step algorithm distinguished melanocytic versus nonmelanocytic lesions. The second step in the diagnostic procedure used 4 algorithms (pattern analysis, ABCD rule, Menzies method, and 7-point checklist) to distinguish melanoma versus benign melanocytic lesions. κ Values, log odds ratios, sensitivity, specificity, and positive likelihood ratios were estimated for all diagnostic algorithms and dermoscopic features. Results: Interobserver agreement was fair to good for all diagnostic methods, but it was poor for the majority of dermoscopic criteria. Intraobserver agreement was good to excellent for all algorithms and features considered. Pattern analysis allowed the best diagnostic performance (positive likelihood ratio: 5.1), whereas alternative algorithms revealed comparable sensitivity but less specificity. Interobserver agreement on management decisions made by dermoscopy was fairly good (mean κ value: 0.53). Conclusion: The virtual Consensus Net Meeting on Dermoscopy represents a valid tool for better standardization of the dermoscopic terminology and, moreover, opens up a new territory for diagnosing and managing pigmented skin lesions. (J Am Acad Dermatol 2003;48:679-93.) J Am Acad Dermatol 2003;48:679-93.
- Published
- 2003
24. No-nonsense dermoscopy self assessment.
- Author
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Johr R
- Subjects
- Aged, Hemorrhage etiology, Hemorrhage pathology, Humans, Male, Melanoma diagnosis, Melanoma pathology, Middle Aged, Skin Diseases pathology, Skin Neoplasms diagnosis, Skin Neoplasms pathology, Dermoscopy methods, Skin Diseases diagnosis
- Published
- 2008
25. Dermoscopic evaluation of amelanotic and hypomelanotic melanoma.
- Author
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Menzies SW, Kreusch J, Byth K, Pizzichetta MA, Marghoob A, Braun R, Malvehy J, Puig S, Argenziano G, Zalaudek I, Rabinovitz HS, Oliviero M, Cabo H, Ahlgrimm-Siess V, Avramidis M, Guitera P, Soyer HP, Ghigliotti G, Tanaka M, Perusquia AM, Pagnanelli G, Bono R, Thomas L, Pellacani G, Langford D, Piccolo D, Terstappen K, Stanganelli I, Llambrich A, and Johr R
- Subjects
- Diagnosis, Differential, Humans, Models, Biological, Observer Variation, Predictive Value of Tests, Sensitivity and Specificity, Dermoscopy, Melanoma pathology, Melanoma, Amelanotic pathology, Skin Neoplasms pathology, Skin Pigmentation
- Abstract
Objective: To determine the predictive dermoscopic features of amelanotic and hypomelanotic melanoma., Design: A total of 105 melanomas (median Breslow thickness, 0.76 mm), 170 benign melanocytic lesions, and 222 nonmelanocytic lesions lacking significant pigment (amelanotic, partially pigmented, and light colored) were imaged using glass-plate dermoscopy devices and scored for 99 dermoscopic features. Diagnostic models were derived from and tested on independent randomly selected lesions., Setting: Predominantly hospital-based clinics from 5 continents., Main Outcome Measures: Sensitivity, specificity, and odds ratios for individual features and models for the diagnosis of melanoma and malignancy., Results: The most significant negative predictors of melanoma were having multiple (>3) milialike cysts (odds ratio, 0.09; 95% confidence interval, 0.01-0.64), comma vessels with a regular distribution (0.10; 0.01-0.70), comma vessels as the predominant vessel type (0.16; 0.05-0.52), symmetrical pigmentation pattern (0.18; 0.09-0.39), irregular blue-gray globules (0.20; 0.05-0.87), and multiple blue-gray globules (0.28; 0.10-0.81). The most significant positive predictors were having a blue-white veil (odds ratio,13; 95% confidence interval, 3.9-40.0), scarlike depigmentation (4.4; 2.4-8.0), multiple blue-gray dots (3.5; 1.9-6.4), irregularly shaped depigmentation (3.3; 2.0-5.3), irregular brown dots/globules (3.2; 1.8-5.6), 5 to 6 colors (3.2; 1.6-6.3), and predominant central vessels (3.1; 1.6-6.0). A simple model distinguishing melanomas from all nonmelanomas had a sensitivity of 70% and a specificity of 56% in the test set. A model distinguishing all malignant lesions from benign lesions had a sensitivity of 96% and a specificity of 37%. Conclusion Although the diagnostic accuracy of dermoscopy for melanoma lacking significant pigment is inferior to that of more pigmented lesions, features distinguishing the former from benign lesions can be visualized on dermoscopic evaluation.
- Published
- 2008
- Full Text
- View/download PDF
26. The diagnostic performance of expert dermoscopists vs a computer-vision system on small-diameter melanomas.
- Author
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Friedman RJ, Gutkowicz-Krusin D, Farber MJ, Warycha M, Schneider-Kels L, Papastathis N, Mihm MC Jr, Googe P, King R, Prieto VG, Kopf AW, Polsky D, Rabinovitz H, Oliviero M, Cognetta A, Rigel DS, Marghoob A, Rivers J, Johr R, Grant-Kels JM, and Tsao H
- Subjects
- Biopsy, Diagnosis, Differential, Dysplastic Nevus Syndrome pathology, Humans, Melanoma pathology, Neoplasm Invasiveness pathology, Sensitivity and Specificity, Skin pathology, Skin Neoplasms pathology, Artificial Intelligence, Clinical Competence, Dermoscopy instrumentation, Diagnosis, Computer-Assisted instrumentation, Image Processing, Computer-Assisted instrumentation, Melanoma diagnosis, Skin Neoplasms diagnosis
- Abstract
Objective: To evaluate the performance of dermoscopists in diagnosing small pigmented skin lesions (diameter = 6 mm) compared with an automatic multispectral computer-vision system., Design: Blinded comparison study., Setting: Dermatologic hospital-based clinics and private practice offices. Patients From a computerized skin imaging database of 990 small (= 6-mm) pigmented skin lesions, all 49 melanomas from 49 patients were included in this study. Fifty randomly selected nonmelanomas from 46 patients served as a control., Main Outcome Measures: Ten dermoscopists independently examined dermoscopic images of 99 pigmented skin lesions and decided whether they identified the lesions as melanoma and whether they would recommend biopsy to rule out melanoma. Diagnostic and biopsy sensitivity and specificity were computed and then compared with the results of the computer-vision system., Results: Dermoscopists were able to correctly identify small melanomas with an average diagnostic sensitivity of 39% and a specificity of 82% and recommended small melanomas for biopsy with a sensitivity of 71% and specificity of 49%, with only fair interobserver agreement (kappa = 0.31 for diagnosis and 0.34 for biopsy). In comparison, in recommending biopsy to rule out melanoma, the computer-vision system achieved 98% sensitivity and 44% specificity., Conclusions: Differentiation of small melanomas from small benign pigmented lesions challenges even expert physicians. Computer-vision systems can facilitate early detection of small melanomas and may limit the number of biopsies to rule out melanoma performed on benign lesions.
- Published
- 2008
- Full Text
- View/download PDF
27. Nevus type in dermoscopy is related to skin type in white persons.
- Author
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Zalaudek I, Argenziano G, Mordente I, Moscarella E, Corona R, Sera F, Blum A, Cabo H, Di Stefani A, Hofmann-Wellenhof R, Johr R, Langford D, Malvehy J, Kolm I, Sgambato A, Puig S, Soyer HP, and Kerl H
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Female, Humans, Male, Middle Aged, Dermoscopy, Nevus, Pigmented classification, Nevus, Pigmented pathology, Skin Neoplasms classification, Skin Neoplasms pathology, White People
- Abstract
Background: Dermoscopic classification of acquired melanocytic nevi (AMN) is based on the evaluation of 3 main criteria-global pattern, pigment distribution, and color., Objective: To determine whether these features are different in AMN in white people with different skin types (STs) according to the Fitzpatrick classification., Design: Digital dermoscopic images of AMN were evaluated, and the correlation of the 3 main dermoscopic criteria with patient ST was analyzed., Setting: Consecutive patients were recruited from 7 pigmented lesion clinics between June 1, 2004, and June 30, 2005. Patients For each patient, the ST (I [always burns, never tans] to IV [rarely burns, tans with ease]) was scored, and 1 representative AMN (defined as the AMN showing a dermoscopic typology that is repeatedly seen in the same patient) was selected and photographed., Main Outcome Measures: The distribution of the dermoscopic criteria of AMN in patients with different STs was calculated by univariate analysis. Differences in prevalence were tested using the chi(2) test. The correlation between dermoscopic criteria and ST, adjusted for age, sex, and enrolling center, was evaluated by calculating odds ratios and 95% confidence intervals by logistic regression analysis., Results: Of 680 included patients, dermoscopic analysis revealed significant differences in the prevalent nevus pattern in the 4 ST groups. Light brown AMN with central hypopigmentation were associated with ST I, and ST IV was associated with the so-called black nevus (P<.001), typified by reticular pattern, central hyperpigmentation, and dark brown coloration. A significant association was also found between multifocal pattern and ST II and ST III., Conclusions: The dermoscopic nevus type varies according to different ST in white people. This knowledge may have an effect on obtaining for biopsy lesions that exhibit unusual dermoscopic patterns when patient ST is considered.
- Published
- 2007
- Full Text
- View/download PDF
28. Dermoscopy features of melanoma incognito: indications for biopsy.
- Author
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Argenziano G, Zalaudek I, Ferrara G, Johr R, Langford D, Puig S, Soyer HP, and Malvehy J
- Subjects
- Adolescent, Adult, Biopsy, Carcinoma, Basal Cell pathology, Diagnosis, Differential, Female, Humans, Middle Aged, Nevus pathology, Nevus, Pigmented pathology, Dermoscopy standards, Melanoma pathology, Skin Neoplasms pathology
- Abstract
Background: To avoid missing melanoma, the current practice is to biopsy all suggestive skin lesions. Although most cases of melanoma exhibit clinical clues leading to the correct diagnosis, melanoma can mimic benign lesions. Dermoscopy has been shown to increase the diagnostic accuracy of clinically equivocal lesions, but little is known about its ability to detect melanoma in the context of lesions that appear clinically benign., Methods: We present 7 difficult-to-diagnose melanomas, in which additional clues provided by dermoscopy increased the index of suggestion and led us to perform a biopsy., Results: Our cases highlight the following 7 management rules: 1) Dermoscopy should not be used only for suggestive skin lesions. 2) Biopsy lesions missing clinicodermoscopic correlation. 3) Biopsy lesions with unspecific pigment pattern. 4) Biopsy lesions with spitzoid features. 5) Biopsy lesions with extensive regression features. 6) In patients with multiple nevi, biopsy lesions changing after short-term follow-up. 7) Biopsy pink lesions with an atypical vascular pattern., Limitations: The reported series of cases is small. Dermoscopy has not been rigorously compared with handheld magnification (as with a x7 loupe)., Conclusions: Dermoscopy can increase the index of suggestion to perform biopsy in difficult-to-diagnose melanomas.
- Published
- 2007
- Full Text
- View/download PDF
29. Dermoscopy key points: recommendations from the international dermoscopy society.
- Author
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Bowling J, Argenziano G, Azenha A, Bandic J, Bergman R, Blum A, Cabo H, Di Stephani A, Grichnik J, Halpern A, Hofman-Wellenhof R, Johr R, Kittler H, Kopf A, Kreusch J, Langford D, Malvehy J, Marghoob A, Menzies S, Ozdemir F, Peris K, Piccolo D, Pizzichetta MA, Polsky D, Puig S, Rabinovitz H, Rubegni P, Saida T, Scalvenzi M, Seidenari S, Soyer HP, Tanaka M, Zalaudek I, and Braun RP
- Subjects
- Humans, Dermatology, Dermoscopy standards, Practice Guidelines as Topic, Societies, Medical
- Published
- 2007
- Full Text
- View/download PDF
30. The performance of SolarScan: an automated dermoscopy image analysis instrument for the diagnosis of primary melanoma.
- Author
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Menzies SW, Bischof L, Talbot H, Gutenev A, Avramidis M, Wong L, Lo SK, Mackellar G, Skladnev V, McCarthy W, Kelly J, Cranney B, Lye P, Rabinovitz H, Oliviero M, Blum A, Varol A, De'Ambrosis B, McCleod R, Koga H, Grin C, Braun R, and Johr R
- Subjects
- Algorithms, Australia, Florida, Germany, Humans, Image Processing, Computer-Assisted methods, Medical Records, Melanoma pathology, Nevus, Pigmented pathology, Predictive Value of Tests, ROC Curve, Retrospective Studies, Sensitivity and Specificity, Skin Neoplasms pathology, Dermoscopy methods, Melanoma diagnosis, Nevus, Pigmented diagnosis, Skin Neoplasms diagnosis
- Abstract
Objective: To describe the diagnostic performance of SolarScan (Polartechnics Ltd, Sydney, Australia), an automated instrument for the diagnosis of primary melanoma., Design: Images from a data set of 2430 lesions (382 were melanomas; median Breslow thickness, 0.36 mm) were divided into a training set and an independent test set at a ratio of approximately 2:1. A diagnostic algorithm (absolute diagnosis of melanoma vs benign lesion and estimated probability of melanoma) was developed and its performance described on the test set. High-quality clinical and dermoscopy images with a detailed patient history for 78 lesions (13 of which were melanomas) from the test set were given to various clinicians to compare their diagnostic accuracy with that of SolarScan., Setting: Seven specialist referral centers and 2 general practice skin cancer clinics from 3 continents. Comparison between clinician diagnosis and SolarScan diagnosis was by 3 dermoscopy experts, 4 dermatologists, 3 trainee dermatologists, and 3 general practitioners., Patients: Images of the melanocytic lesions were obtained from patients who required either excision or digital monitoring to exclude malignancy., Main Outcome Measures: Sensitivity, specificity, the area under the receiver operator characteristic curve, median probability for the diagnosis of melanoma, a direct comparison of SolarScan with diagnoses performed by humans, and interinstrument and intrainstrument reproducibility., Results: The melanocytic-only diagnostic model was highly reproducible in the test set and gave a sensitivity of 91% (95% confidence interval [CI], 86%-96%) and specificity of 68% (95% CI, 64%-72%) for melanoma. SolarScan had comparable or superior sensitivity and specificity (85% vs 65%) compared with those of experts (90% vs 59%), dermatologists (81% vs 60%), trainees (85% vs 36%; P =.06), and general practitioners (62% vs 63%). The intraclass correlation coefficient of intrainstrument repeatability was 0.86 (95% CI, 0.83-0.88), indicating an excellent repeatability. There was no significant interinstrument variation (P = .80)., Conclusions: SolarScan is a robust diagnostic instrument for pigmented or partially pigmented melanocytic lesions of the skin. Preliminary data suggest that its performance is comparable or superior to that of a range of clinician groups. However, these findings should be confirmed in a formal clinical trial.
- Published
- 2005
- Full Text
- View/download PDF
31. Eccrine porocarcinoma arising in a seborrheic keratosis evaluated with dermoscopy and treated with Mohs' technique.
- Author
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Johr R, Saghari S, and Nouri K
- Subjects
- Aged, Carcinoma, Basal Cell etiology, Eccrine Glands pathology, Eccrine Glands surgery, Female, Humans, Keratosis, Seborrheic complications, Sweat Gland Neoplasms etiology, Carcinoma, Basal Cell pathology, Carcinoma, Basal Cell surgery, Keratosis, Seborrheic pathology, Mohs Surgery, Sweat Gland Neoplasms pathology, Sweat Gland Neoplasms surgery
- Abstract
A 78-year-old white woman returned for a routine 6-month skin cancer examination. She had a history of actinic keratosis and multiple basal cell carcinomas. She had no personal or family history of dysplastic nevi or melanoma. The patient was asymptomatic and unaware of any new or changing skin lesions. The patient had multiple lentigines, hemangiomas, and actinic and seborrheic keratoses on all sun-exposed areas. There were no less than 10 seborrheic keratoses on the right mid-back, and one was found to have a 1-cm, reddish nodule asymmetrically located within it (Figs 1 and 2). A clear papule on the left preauricular area was found on biopsy to be a basal cell carcinoma. The nodule on the back was still present 1 month later and it was felt that further evaluation was indicated. As melanoma has been reported to develop in seborrheic keratoses, we decided to examine the lesion using digital dermoscopy. With digital dermoscopy, a well-demarcated reddish nodule was asymmetrically located within a brown lesion. It blanched significantly with pressure. Within the nodule, there were dotted and irregular linear vessels (atypical vascular pattern; also known as polymorphous vascular pattern) and regular-appearing brown dots. Surrounding the reddish nodule, there were pale and pigmented, comedo-like openings, fissures, and ridges (brain-like appearance). Some of the follicular openings appeared to be within the wall of the nodule (Figs 3 and 4). Comedo-like openings, fissures, and ridges are primary dermoscopic criteria for the diagnosis of a seborrheic keratosis; however, the vascular pattern seen has not been reported in seborrheic keratosis. Due to the patient's age and the rarity of significant pathology arising in a seborrheic keratosis, a shave biopsy was performed. To our surprise, the specimen was interpreted by an experienced dermatopathologist as a well-differentiated eccrine porocarcinoma. Due to the high local recurrence rate and metastatic potential of this carcinoma, the patient was referred for Mohs' surgery. Both the basal cell carcinoma and the eccrine porocarcinoma were excised in one stage. A metastatic work-up was negative and the patient appears to be doing well.
- Published
- 2003
- Full Text
- View/download PDF
32. Dermoscopy of pigmented skin lesions: results of a consensus meeting via the Internet.
- Author
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Argenziano G, Soyer HP, Chimenti S, Talamini R, Corona R, Sera F, Binder M, Cerroni L, De Rosa G, Ferrara G, Hofmann-Wellenhof R, Landthaler M, Menzies SW, Pehamberger H, Piccolo D, Rabinovitz HS, Schiffner R, Staibano S, Stolz W, Bartenjev I, Blum A, Braun R, Cabo H, Carli P, De Giorgi V, Fleming MG, Grichnik JM, Grin CM, Halpern AC, Johr R, Katz B, Kenet RO, Kittler H, Kreusch J, Malvehy J, Mazzocchetti G, Oliviero M, Ozdemir F, Peris K, Perotti R, Perusquia A, Pizzichetta MA, Puig S, Rao B, Rubegni P, Saida T, Scalvenzi M, Seidenari S, Stanganelli I, Tanaka M, Westerhoff K, Wolf IH, Braun-Falco O, Kerl H, Nishikawa T, Wolff K, and Kopf AW
- Subjects
- Carcinoma, Basal Cell diagnosis, Carcinoma, Basal Cell pathology, Diagnosis, Differential, Humans, Melanoma classification, Microscopy standards, Photography, Reference Values, Sensitivity and Specificity, Skin Diseases diagnosis, Skin Diseases pathology, Skin Neoplasms classification, Terminology as Topic, Algorithms, Internet, Melanoma diagnosis, Melanoma pathology, Microscopy methods, Practice Guidelines as Topic, Skin Neoplasms diagnosis, Skin Neoplasms pathology, Skin Pigmentation
- Abstract
Background: There is a need for better standardization of the dermoscopic terminology in assessing pigmented skin lesions., Objective: The virtual Consensus Net Meeting on Dermoscopy was organized to investigate reproducibility and validity of the various features and diagnostic algorithms., Methods: Dermoscopic images of 108 lesions were evaluated via the Internet by 40 experienced dermoscopists using a 2-step diagnostic procedure. The first-step algorithm distinguished melanocytic versus nonmelanocytic lesions. The second step in the diagnostic procedure used 4 algorithms (pattern analysis, ABCD rule, Menzies method, and 7-point checklist) to distinguish melanoma versus benign melanocytic lesions. kappa Values, log odds ratios, sensitivity, specificity, and positive likelihood ratios were estimated for all diagnostic algorithms and dermoscopic features., Results: Interobserver agreement was fair to good for all diagnostic methods, but it was poor for the majority of dermoscopic criteria. Intraobserver agreement was good to excellent for all algorithms and features considered. Pattern analysis allowed the best diagnostic performance (positive likelihood ratio: 5.1), whereas alternative algorithms revealed comparable sensitivity but less specificity. Interobserver agreement on management decisions made by dermoscopy was fairly good (mean kappa value: 0.53)., Conclusion: The virtual Consensus Net Meeting on Dermoscopy represents a valid tool for better standardization of the dermoscopic terminology and, moreover, opens up a new territory for diagnosing and managing pigmented skin lesions.
- Published
- 2003
- Full Text
- View/download PDF
33. Lessons on dermoscopy.
- Author
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Johr R and Stolz W
- Subjects
- Aged, Humans, Male, Melanoma pathology, Skin Neoplasms pathology
- Published
- 2002
- Full Text
- View/download PDF
34. Lessons on dermoscopy.
- Author
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Johr R and Menzies S
- Subjects
- Adult, Diagnosis, Differential, Humans, Male, Dermatology instrumentation, Diagnosis, Computer-Assisted instrumentation, Diagnostic Imaging instrumentation, Nevus, Pigmented diagnosis, Skin Neoplasms diagnosis
- Published
- 2001
- Full Text
- View/download PDF
35. Dermatoscopy/ELM for the evaluation of nail-apparatus pigmentation.
- Author
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Johr RH and Izakovic J
- Subjects
- Aged, Child, Diagnosis, Differential, Female, Humans, Male, Melanoma pathology, Nail Diseases pathology, Nails pathology, Pigmentation, Skin Neoplasms pathology, Melanoma diagnosis, Nail Diseases diagnosis, Photomicrography, Skin Neoplasms diagnosis
- Published
- 2001
36. Lessons on dermoscopy #12. Malignant melanoma in situ with regression.
- Author
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Izakovic J and Johr RH
- Subjects
- Aged, Humans, Male, Thorax, Melanoma pathology, Skin Neoplasms pathology
- Published
- 2001
37. Management of nevus spilus-a better way.
- Author
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Johr RH and Binder M
- Subjects
- Dermatology methods, Image Processing, Computer-Assisted, Nevus, Pigmented surgery, Skin Neoplasms surgery
- Published
- 2000
- Full Text
- View/download PDF
38. Lessons on dermoscopy #8. A high-risk melanocytic lesion.
- Author
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Johr RH, Schachner LA, and Izakovic J
- Subjects
- Diagnosis, Differential, Female, Humans, Infant, Nevus, Pigmented congenital, Skin Neoplasms congenital, Vulvar Neoplasms congenital, Nevus, Pigmented pathology, Skin Neoplasms pathology, Vulvar Neoplasms pathology
- Published
- 2000
- Full Text
- View/download PDF
39. Menarche precipitating the onset of atopic dermatitis.
- Author
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Johr RH, Schachner LA, and Huneiti A
- Subjects
- Adolescent, Dermatitis, Atopic diagnosis, Female, Humans, Time Factors, Dermatitis, Atopic etiology, Menarche physiology
- Published
- 1999
- Full Text
- View/download PDF
40. Management of nevus spilus.
- Author
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Johr RH, Schachner LS, and Stolz W
- Subjects
- Adolescent, Adult, Humans, Methods, Nevus, Pigmented surgery, Skin Neoplasms surgery
- Published
- 1998
- Full Text
- View/download PDF
41. Laser surgery.
- Author
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Johr RH
- Subjects
- Dermatology education, Humans, Learning, Mentors, Dermatologic Surgical Procedures, Laser Therapy adverse effects, Laser Therapy methods
- Published
- 1998
- Full Text
- View/download PDF
42. Lentigo maligna and lentigo maligna melanoma.
- Author
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Johr RH and Stolz W
- Subjects
- Diagnosis, Differential, Humans, Hutchinson's Melanotic Freckle pathology, Melanoma pathology, Skin Neoplasms pathology, Hutchinson's Melanotic Freckle diagnosis, Melanoma diagnosis, Skin Neoplasms diagnosis
- Published
- 1997
- Full Text
- View/download PDF
43. Diagnostic problems of desmoplastic melanoma in a boy with xeroderma pigmentosa.
- Author
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Johr RH and Stolz W
- Subjects
- Child, Diagnosis, Differential, Humans, Male, Melanoma complications, Skin Neoplasms complications, Melanoma diagnosis, Skin Neoplasms diagnosis, Xeroderma Pigmentosum complications
- Published
- 1997
- Full Text
- View/download PDF
44. Allergic contact dermatitis mistaken for mycosis fungoides.
- Author
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Johr R
- Subjects
- Diagnosis, Differential, Humans, Dermatitis, Allergic Contact diagnosis, Mycosis Fungoides diagnosis, Skin Neoplasms diagnosis
- Published
- 1994
- Full Text
- View/download PDF
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