<prompt> Most common type of melanomaNodular melanomaSuperficial spreading melanomaLentigo maligna melanomaAcral lentigious melanoma  <response>: Superficial spreading melanoma SSM This is the most common presentation 70, usually arising in a pre-existent naevus after several years of slow change, followed by rapid growth in the preceding months before presentation.Ref: Bailey and Love, 27e, page: 609 