Shiny white structures

From dermoscopedia

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 Authored by: Ralph P. Braun     ·  Katrin Kerl

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Description In this chapter we describe cristalline structuresChristalline structures, are white shiny linear streaks that are seen under polarized dermoscopy, but not under nonpolarized dermoscopy. The white streaks are oriented parallel, and sometimes also orthogonal (perpendicular) to each other. Chrysalis structures can be seen in scars, dermatofibromas, basal cell carcinomas, and also in melanomas and Spitz nevi. These structures correlate histopathologically with altered collagen in the dermis (fibrosis). The birefringent properties of collagen bundles causes rapid randomization of polarized light and this is, why collagen appears bright white and more conspicuous under polarized dermoscopy. and its histopathological correlation
Author(s) Ralph P. Braun · Katrin Kerl
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Status update May 27, 2017
Status by Ralph P. Braun


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Shiny white structures
  • Shiny white streakslines white perpendicular*
  • Shiny white blotches and strandsWhite structures in the form of circles, oval structures, or large structureless areas that are bright-white longer and less well defined lines oriented parallel or distributed haphazardly, or forming blotches (shiny white clods). Seen only under polarized dermoscopy.
  • RosettesFour bright white dots or clods arranged together as a square (or a four leaf clover)
  • Shiny white areas
Shiy white structures schematic 28.jpg

Christalline structures, are white shiny linear streakslines radial (always at periphery) streaks Reed nevus melanoma recurrent nevus that are seen under polarized dermoscopyDermoscopy is a non invasive diagnostic method., but not under nonpolarized dermoscopy. The white streaks are oriented parallel, and sometimes also orthogonal (perpendicular) to each other. Chrysalis structuresolt term for Chrysalis / Cristalline Structures can be seen in scars, dermatofibromas, basal cell carcinomas, and also in melanomas and Spitz neviThis glossary term has not yet been described.. These structures correlate histopathologically with altered collagen in the dermis (fibrosis). The birefringent properties of collagen bundles causes rapid randomization of polarized lightThis glossary term has not yet been described. and this is, why collagen appears bright white and more conspicuous under polarized dermoscopy.