realized in realized in melanocyte proliferation benign neoplasm lentigo https://github.com/monarch-initiative/mondo/issues/3692 https://www.malacards.org/card/lentigines OMIM:150900 Excluded benign neoplasm as a subclass because NCIT classifies as non-neoplastic. MEDGEN:7301 NCIT:C3159 lentigo lentiginosis MESH:D007911 UMLS:C0023321 A flat, benign, pigmented spot on the skin caused by excessive deposition of melanin from an increased number of melanocytes in the cell layer directly above the basement membrane of the epidermis. Formation is usually related to sun exposure during youth, and the lesions do not typically progress to malignancy. MONDO:0021582 lentigines SCTID:402624000 hereditary skin disorder