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Ikke alle dermatoskoper med polariseret lys kan vise diagnostisk kritiske polariseringsspecifikke funktioner

By November 15, 2022Januar 30th, 2024Ingen kommentarer

Chin Whybrew, Pawel Pietkiewicz, Ihor Kohut, Justin C. Chia, Bengu Nisa Akay, Cliff Rosendahl

Dermatol Pract Concept. 2022;12(4):e2022250

Since the introduction of polarized-light dermatoscopes it has become evident that there are some fundamental differ-ences in image characteristics, in comparison to those pro-vided by non-polarized dermatoscopy [1].Non-polarized dermatoscopy provides color rendition without dilution of colors such as gray and blue by polariz-ing filters, and it provides a clear display of white clods and dots (milia-like cysts) in seborrheic keratoses [1-3].Polarized dermatoscopy on the other hand displays fea-tures not seen in non-polarized dermatoscopy, including shiny white structures/streaks [4] (defined as short, bright, white lines distributed in a parallel or orthogonal orienta-tion, which can only be seen with polarized dermatoscopy), four-dot clods (rosettes) and polarizing-specific structureless areas [4].Each of these polarizing-specific features are known to have diagnostic relevance,but notably, it has been shown that shiny white structures/streaks can be critical in the di-agnosis of melanoma [5] and in a meta-analysis they have been shown to have the equal highest odds ratio (OR) of 6.7 for the diagnosis of melanoma, compared to pseudopods (equal), irregular pigmentation (OR 6.4), blue-white veil (OR 6.3) and peppering (OR 6.3) [4]. To read further, Klik her

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