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Moles Junctional Nevi

Junctional nevi are most commonly found in children. Junction nevi vary in size from 0.1 to 0.6 cm; some are larger. They appear as flat or slightly raised brown to tan macules with uniform pigmentation that may be slightly irregular. The surface is smooth and flat to slightly elevated, and the border is round or oval and symmetric. Most lesions are hairless. Skin markings are preserved on the surface of the nevus. Nests of nevus cells cluster at the dermoepidermal junction. Junction nevi may change into compound nevi after childhood, but they remain as junction nevi on palms, soles, and the genitalia. Junction nevi are rare at birth and generally develop after the age of 2 years. Degeneration into melanoma is rare.