Abstract

D ERMOSCOPIC VASCULAR PATTERN MAY BE essential for the correct diagnosis of completelyamelanoticmelanomas,which are still a diagnostic challenge because of thelackofpigmentation.Hereweillustrate thedermoscopyimagesof3biopsy-provenamelanoticmelanomas, all Clark level IV and Breslow depth greater than 4 mm, belonging to different patients (Figures 1, 2, and3).Milky redglobules and/orareas (blackarrows)and irregular linearvessels(whitearrows)werealwaysdetected; hairpin (white arrowheads) and dotted vessels (black arrowheads) were observed in 2 cases; and highly tortuous vessels, a rarelydescribed feature,were found inonly1case (stars inFigure1). Inconclusion,themilkyredglobulesand/ orareas,whichcorrespondtohighlyvascularizedtumorcell nests, together with the irregular linear vessels seem to be the most useful dermoscopic features for the diagnosis of trulyamelanoticmelanomas, althoughhairpin,dotted, and highly tortuous vessels should also be considered.

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