<unk>  is a result of malignant melanocytes at the membrane of the skin (outer layers). The pathogenesis of<unk>  remains unknown at this time. It is not caused by sunlight or UV radiation.
Acral lentiginous melanoma
Lentigo maligna melanoma
Superficial spreading melanoma
Polypoid melanoma
Nodular melanoma
Melanocytic nevus
Animal-type melanoma
Pseudomelanoma