Answer:
Intradermal nevus (most nevus cells found within the cutis) / Compound nevus (cells in the epidermis as well as a considerable number of nevus cells in the dermis): The cells from the neural crest of the embryo migrate to the skin surface and produce a number of a different types of pigmented nevus cell nevi. There are three major categories of nevus cell nevi: junction, compound and intradermal. They take their names from the microscopic position that most cells occupy in the skin. Flat lesions are likely to be junctional; those that are slightly raised are likely to be compound nevi. Sessile and dome shaped lesions are intradermal nevi in the vast majority of cases. Treatment is surgical excision