Congenital Melanocytic Nevus: Causes, Symptoms, and Treatment Frontiers The WHO 2018 Classification of Cutaneous Melanocytic Neoplasms: Suggestions From Routine Practice About Moles Types, Warning Signs, Causes, and Prevention An acral nevus is a benign melanocytic lesion found on the palms and soles. Dermoscopically, it most commonly shows the parallel furrow pattern, where pigmentation follows the furrows of the skin markings. Pigmented macular lip lesion Clinical Advisor