spitz nevus https://github.com/monarch-initiative/mondo/issues/10027 spitz nevus MEDGEN:1876516 UMLS:C5979990 2026-06-01 NCIT:C27007 spindle and/ or epithelioid cell Nevus spitz nevi MONDO:0044793 benign juvenile melanoma A benign, acquired or congenital, usually single skin lesion. It can occur on any area of the body, but most commonly occurs on the face of children and the thighs of young females. It is characterized by a proliferation of large spindle, oval, or large epithelioid melanocytes in the dermal-epidermal junction. The melanocytic proliferation subsequently extends into the dermis. spitz naevus ICDO:8770/0 This term is scheduled for obsoletion based on the fact that it is a not a disease. After obsoletion, this term will not have a replacement ID, but one could consider the following term: - juvenile nevus benign melanocytic skin nevus