melanocytic nevus benign melanocytic skin nevus benign nevus of the skin benign nevus of skin NCIT:C7571 benign skin nevus MEDGEN:264151 benign melanocytic skin nevus benign melanocytic nevus of the skin benign mole benign melanocytic nevus MONDO:0044794 A benign, circumscribed proliferation of melanocytes in the skin. Variants include the Spitz nevus, halo nevus, blue nevus, and balloon cell nevus. UMLS:C1456781 Editor note: TODO logical def benign melanocytic nevus of skin