Acral Amelanotic Verrucous Melanoma: Dermoscopic Findings

Abstract

Acral melanoma is a rare but distinctive subtype of melanoma. It is frequently found in the nonwhite population with dark skin type (Fitzpatrick V and VI). Acral melanoma is the most common type of all cutaneous melanomas (B70%) in these patients. In the white population, its prevalence is 4.5% to 7% of all melanomas. The diagnosis is often delayed, and misdiagnosis is common because its clinical presentation is frequently unusual and there is a higher rate of amelanosis than in other melanoma subtypes. When melanoma is poorly pigmented, there are many conditions in the differential diagnosis such as warts, hemorrhage, ulcers, callous, tinea pedis, and other skin tumors such as squamous cell carcinoma and adnexal tumors.