A 72-year-old female patient was referred for dermatological evaluation due to a tumoral lesion located on the nail of the right first finger, which had grown over a period of 3 months and was initially diagnosed as onychomycosis and local trauma. Upon examination, an exophytic, erythematoviolaceous lesion with a friable and bleeding surface was observed, completely substituting the nail unit. Ipsilateral palpable adenomegaly was also identified in the cubital fossa.