Acral Lentiginous Melanoma: Clinicopathologic Characteristics and Survival Outcomes in the United States National Cancer Database 2004 -2016.
Acral lentiginous melanoma (ALM) is one of four subtypes of cutaneous melanoma (CM) comprising of 2-3% of all melanomas in the United States. It occurs predominantly on the palms, soles, and nail beds. It is a common subtype found in people with darker skin types. Acral lentiginous melanomas are generally associated with a poor prognosis. Understanding of the demographics, outcomes, and treatment of this type of melanoma can be aided by studying a larger cancer registry.