In this issue of the ARCHIVES, Liu et al1 make a significant contribution to the understanding of differential growth rates of melanomas. Using the Breslow index as a surrogate for tumor growth, they find that approximately one third of melanomas are rapidly growing melanomas. These fast-growing tumors are usually thick, occur mainly in elderly patients, and from a clinical point of view are symmetrical.
Lipsker D. Growth Rate, Early Detection, and Prevention of MelanomaMelanoma Epidemiology Revisited and Future Challenges. Arch Dermatol. 2006;142(12):1638-1640. doi:10.1001/archderm.142.12.1638