Deep Penetrating Nevus: A Rare Variant of Melanocytic Nevus

Deep penetrating nevus (DPN) is a distinctive melanocytic nevus. The most frequent clinical presentation is that of a deeply pigmented papule on the face, head, neck, trunk, or proximal extremity. Histopathologically, the DPN is wedgeshaped and contains spindles melanocytes that exhibit deep infiltration into the dermis. It can be falsely diagnosed as malignant melanoma. Simple excision of the lesion is usually curative. We report an uncommon case of congenital DPN, which should be considered in any young patient presenting with a new or changing darkly pigmented papule or nodule.