 Dermatoscopy has been updated and renewed several times since its initial descriptions of basal cell carcinoma, BCC, patterns, enhancing BCC detection, discrimination from other skin tumors and inflammatory diseases, providing valuable information about histopathologic subtype, clinically undetectable pigmentation, tumor expansion beyond visible margins, and response to non-ablative treatments. This article was authored by Emilio Zlala, Zoe Apala, Giuseppe Argenziano, and others.