Monarch Disease Ontology term MONDO_0005012 (cutaneous melanoma) is a primary melanoma arising from atypical melanocytes in the skin. Precursor lesions include acquired and congenital melanocytic nevi, and dysplastic nevi. Several histologic variants have been recognized, including superficial spreading melanoma, acral lentiginous melanoma, nodular melanoma, and lentigo maligna melanoma. Also known as: cutaneous (skin) melanoma, cutaneous melanoma (disease), malignant cutaneous melanoma, malignant ear melanoma, malignant lip melanoma, malignant lower limb melanoma, malignant melanoma (of skin), stage unspecified, malignant melanoma of ear and/or external auricular canal.