obsolete_Non-Cutaneous Melanoma true Replaced by Mondo term MONDO_0006320, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0006320 extracutaneous melanoma http://purl.obolibrary.org/obo/MONDO_0006320 UMLS:C1334974 EFO:1000397 NCIT:C8711 Melanoma is a malignant tumor of melanocytes, cells that are derived from the neural crest. Although most melanomas arise in the skin, they also may arise from mucosal surfaces or at other sites to which neural crest cells migrate. (PDQ) 3.88.0 non-cutaneous melanoma