What is Nevus?
Nevus meaning Benign skin tumor appearing as a mole or birthmark. These tumors are proliferations of melanocytes and are probably of neural crest origin. These benign tumors may be junctional (at the dermal-epidermal junction), intradermal or compound (junctional and intradermal). They may be pigmented or nonpigmented. The giant pigmented nevi which are present at birth may become malignant.