Browsing by Author "Jaimes, Natalia"

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    Abstracts from the 4th World Congress of the International Dermoscopy Society, April 16–18, 2015, Vienna, Austria.
    (2015) Cinotti, Elisa; Navarrete Dechent, Cristián; Jaimes, Natalia
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    Dermoscopy in Selected Latin American Countries: A Preliminary Look into Current Trends and Future Opportunities Among Dermatology Residency Programs
    (2023) Perez, Mariana; Williams, Natalie M.; Avila, Alejandra M.; Bakos, Renato; Bittencourt, Flavia; Carlos-Ortega, Blanca; Garzona, Laura; Larre-Borges, Alejandra; Naverrete-Dechent, Cristian; Pinos, Victor; Salerni, Gabriel; Shum-Tien, Jackie; Jaimes, Natalia
    Introduction: Skin cancer remains a global public health burden. Dermoscopy is a useful technique that aids in early detection and increases diagnostic accuracy with adequate training. However, dermoscopy is not uniformly taught to residents worldwide. Dermoscopy training in Latin American dermatology residency programs has not been explored. Objectives: To assess current dermoscopy training among dermatology residency programs in Latin America (eg training modalities, preferred/most effective modalities per residents, diseases/pathologies taught). Methods: Cross-sectional survey distributed via e-mail between March and May 2021. Chief residents from Argentina, Brazil, Colombia, Costa Rica, Chile, Ecuador, Guatemala, Mexico, Panama, and Uruguay were invited to participate. Results: 81 chief residents completed the questionnaire (81/126, 64.2%). Seventy-two percent of programs had an established dermoscopy curriculum, with dedicated hours of training varying greatly by program. Institutions commonly utilized sessions with "unknown" dermoscopy images and direct teaching by experts in the clinical setting as supplements to lectures, also described by residents as most effective. The most commonly taught methods included pattern analysis (74.1%), the two-step algorithm (61.7%), and the ABCD rule (59.3%). Almost all respondents reported desiring additional training during residency and believe that dermoscopy training should be a requirement to graduate from residency. Conclusions: This study highlights a preliminary look into current landscape in dermoscopy training among selected Latin American dermatology residency programs, demonstrating room for improvement and standardization in dermoscopic education and training. Our results serve as a baseline reference and provide valuable information to guide future educational initiatives incorporating successful teaching strategies (eg. spaced education/repetition, flipped classroom model) used in dermatology and other fields.
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    Dermoscopy of linear basal cell carcinomas, a potential mimicker of linear lesions: a descriptive case series
    (2022) Navarrete-Dechent, Cristián; Marchetti, Michael; Uribe González, Pablo Francisco; Schwartz, Rodrigo; Liopyris, Konstantinos; Marghoob, Nadeem; Galimany Navajas, Lucas Fernando; Castro, Juan; Jaimes, Natalia; Rabinovitz, Harold; Moraes, Ana; Marghoob, Ashfaq; Abarzúa-Araya, Alvaro
    Introduction: Among the various widely recognized basal cell carcinoma (BCC) clinical patterns, linear basal cell carcinoma (LBCC) is an uncommon morphologic variant of BCC. Objectives: Describe the clinical and dermoscopic characteristics of LBCC. Methods: Retrospective study including LBCC cases from 5 dermatology centers in North and South America. Biopsy-proven primary BCCs, that presented with at least 3:1 length:width ratio on physical examination, irrespective of tumor subtype or location, were included. Clinical and dermoscopic analysis were performed by 2 experts in dermoscopy. Results: Eighteen cases of LBCC met our inclusion criteria and were included in the study. Median age at diagnosis was 86.0 years, 10 patients (58.8%) were males. Regarding anatomic location, 11/18.
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    Expert Agreement on the Presence and Spatial Localization of Melanocytic Features in Dermoscopy
    (2024) Liopyris, Konstantinos; Navarrete-Dechent, Cristian; Marchetti, Michael A.; Rotemberg, Veronica; Apalla, Zoe; Argenziano, Giuseppe; Blum, Andreas; Braun, Ralph P.; Carrera, Cristina; Codella, Noel C. F.; Combalia, Marc; Dusza, Stephen W.; Gutman, David A.; Helba, Brian; Hofmann-Wellenhof, Rainer; Jaimes, Natalia; Kittler, Harald; Kose, Kivanc; Lallas, Aimilios; Longo, Caterina; Malvehy, Josep; Menzies, Scott; Nelson, Kelly C.; Paoli, John; Puig, Susana; Rabinovitz, Harold S.; Rishpon, Ayelet; Russo, Teresa; Scope, Alon; Soyer, H. Peter; Stein, Jennifer A.; Stolz, Willhelm; Sgouros, Dimitrios; Stratigos, Alexander J.; Swanson, David L.; Thomas, Luc; Tschandl, Philipp; Zalaudek, Iris; Weber, Jochen; Halpern, Allan C.; Marghoob, Ashfaq A.
    Dermoscopy aids in melanoma detection; however, agreement on dermoscopic features, including those of high clinical relevance, remains poor. In this study, we attempted to evaluate agreement among experts on exemplar images not only for the presence of melanocytic-specific features but also for spatial localization. This was a cross-sectional, multicenter, observational study. Dermoscopy images exhibiting at least 1 of 31 melanocytic-specific features were submitted by 25 world experts as exemplars. Using a web-based platform that allows for image markup of specific contrast-defined regions (superpixels), 20 expert readers annotated 248 dermoscopic images in collections of 62 images. Each collection was reviewed by five independent readers. A total of 4,507 feature observations were performed. Good-to-excellent agreement was found for 14 of 31 features (45.2%), with eight achieving excellent agreement (Gwet's AC >0.75) and seven of them being melanomaspecific features. These features were peppering/granularity (0.91), shiny white streaks (0.89), typical pigment network (0.83), blotch irregular (0.82), negative network (0.81), irregular globules (0.78), dotted vessels (0.77), and blue-whitish veil (0.76). By utilizing an exemplar dataset, a good-to-excellent agreement was found for 14 features that have previously been shown useful in discriminating nevi from melanoma. All images are public (www.isic-archive.com) and can be used for education, scientific communication, and machine learning experiments.
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    Melanocytic Lesions. Other Melanoma Subtypes
    (CRC Press, 2022) Navarrete Dechent, Cristián Patricio; Liopyris, Konstantinos; Jaimes, Natalia; Marghoob, Ashfaq A.
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    Perifollicular linear projections: A dermatoscopic criterion for the diagnosis of lentigo maligna on the face
    (2024) Navarrete-Dechent, Cristian; Jaimes, Natalia; Dusza, Stephen W.; Liopyris, Konstantinos; Marchetti, Michael A.; Cordova, Miguel; Oliviero, Margaret; Villaseca, Miguel A.; Pulitzer, Melissa; Busam, Klaus J.; Rossi, Anthony M.; Rabinovitz, Harold S.; Nehal, Kishwer S.; Scope, Alon; Marghoob, Ashfaq A.
    Background: Lentigo maligna (LM) can mimic benign, flat, pigmented lesions and can be challenging to diagnose. Objective: To describe a new dermatoscopic feature termed "perifollicular linear projections (PLP)"as a diagnostic criterion for LM on the face. Methods: Retrospective study on reflectance confocal microscopy and dermatoscopy images of flat facial pigmented lesions originating from 2 databases. PLP were defined as short, linear, pigmented projections emanating from hair follicles. Dermatoscopy readers were blinded to the final histopathologic diagnosis. Results: From 83 consecutive LMs, 21/83 (25.3%) displayed "bulging of hair follicles"on reflectance confocal microscopy and 18 of these 21 (85.7%), displayed PLP on dermatoscopy. From a database of 2873 consecutively imaged and biopsied lesions, 252 flat-pigmented facial lesions were included. PLP was seen in 47/76 melanomas (61.8%), compared with 7/176 lesions (3.9%) with other diagnosis (P \ .001). The sensitivity was 61.8% (95% CI, 49.9%-72.7%), specificity 96.0% (95% CI, 92.9%-98.4%). PLP was independently associated with LM diagnosis on multivariate analysis (OR 26.1 [95% CI, 9.6%-71.0]). Limitations: Retrospective study. Conclusion: PLP is a newly described dermatoscopic criterion that may add specificity and sensitivity to the early diagnosis of LM located on the face. We postulate that PLP constitutes an intermediary step in the LM progression model. ( J Am Acad Dermatol 2024;90:52-7.)
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    Response to comments on the Letter to the Editor titled "Differentiating basal cell carcinoma from intradermal nevi along the eyelid margin with dermoscopy: A case series''
    (Mosby-Elsevier, 2021) Williams, Natalie M.; Navarrete Dechent, Cristian Patricio; Marghoob, Ashfaq A.; Abarzua Araya, Álvaro Rodrigo; Salerni, Gabriel; Jaimes, Natalia
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    The role of ultraviolet-induced fluorescence dermatoscopy for the detection of multiple aggregated yellow-white globules in basal cell carcinoma
    (American Academy of Dermatology, Inc., 2024) Navarrete Dechent, Cristian Patricio; Pietkiewicz, Pawel; Astronave, Gisel; Marghoob, Nadeem G.; Dusza, Stephen W.; Lorenzoni Gaete, María Josefina; Boleira, Manuela; Cristopher, Michael; Valdivia Agüero, Rosario del Pilar; Bustos, Sergio; Jaimes, Natalia; Kurpis, María; Hidalgo Acuña, Leonel Esteban; Abarzúa Araya, Alvaro Rodrigo; Zoroquiain Velez, José Pablo; Uribe González, Pablo Francisco; Cárdenas de la Torre, Consuelo Paz; Droppelmann Droppelmann Katherine Ann; Marghoob, Ashfaq A.
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    Use of game-based learning strategies for dermatology and dermoscopy education: a cross-sectional survey of members of the International Dermoscopy Society
    (2024) Donoso, Francisca; Peirano, Dominga; Aguero, Rosario; Longo, Caterina; Apalla, Zoe; Lallas, Aimilios; Jaimes, Natalia; Navarrete-Dechent, Cristian
    Background Dermoscopy is a valuable tool in the diagnosis of various skin conditions. It increases sensitivity and specificity in skin cancer diagnosis, as well as in infectious, inflammatory and hair diseases. However, mastering the intricacies of dermoscopy can be challenging. In this context, innovative educational methods are sought, including game-based learning (GBL) strategies. Objectives To describe current perceptions, knowledge and use of GBL strategies in dermoscopy education, and identify strengths and challenges to enhance their use. Methods A web-based cross-sectional survey with 25 questions was distributed to members of the International Dermoscopy Society between October 2022 and April 2023. Responses were collected and analysed using frequency analysis and graphical representation. Results In total, 801 responses were received. Of these, 46.6% of respondents were unfamiliar with gamification and serious games. Among those acquainted with these concepts, 56.3% reported using GBL strategies for education. Younger participants were more likely to use GBL strategies (P = 0.02). Participants familiar with GBL believed it enhanced medical education (78.5%) but should not entirely replace traditional teaching methods (96.0%). For dermoscopy education specifically, 22.1% of respondents had used GBL strategies, with Kahoot! (35.5%) and YOUdermoscopy (24.1%) being the most commonly used platforms. Respondents found gaming strategies to be fun (95.5%), motivating (91.0%) and valuable for e-learning (94.4%). Conclusions Results from this survey demonstrate a favourable perception of GBL strategies in dermatology education, including dermoscopy. While there are ongoing challenges in validation, GBL strategies are promising and valuable tools that can aid the learning and teaching experience. Addressing implementation barriers and validating existing games could optimize the impact of GBL on dermatology education.