Teysseire S, et al. - The purpose of this investigation was to define the different clinical and dermoscopic presentations of subungual squamous cell carcinoma (SSCC) and to comparatively analyze them with onychomatricoma-associated clinical and dermoscopic features. It was reported that for attaining a better selection of the cases to be submitted to biopsy, dermoscopy of the nail plate and of the nail free edge in SSCC yielded beneficial information.