Dermoscopic Features of Basal Cell Carcinomas: Differences in Appearance Under Non-Polarized and Polarized Light

Background

Basal cell carcinomas (BCCs) can be diagnosed using different dermoscopic modalities.



Objective

To evaluate dermoscopic features of BCCs using nonpolarized and polarized dermoscopy to highlight similarities and differences between dermoscopic modalities.



Materials and Methods

Retrospective study of 149 BCCs under nonpolarized dermoscopy (NPD), polarized contact dermoscopy (PCD), and polarized noncontact dermoscopy (PNCD). Images were evaluated for a range of dermoscopic colors, structures, and vessels. Features were compared according to histopathologic subtype.



Results

The most common dermoscopic structures in BCCs across all modalities included globules (50.3–51.0%), dots (49.7–50.3%), white structureless areas (63.1–74.5%), structureless gray–brown areas (24.2–24.8%), and ...

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