This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Most common type of melanoma 
Select and explain. 
A. Nodular melanoma, B. Superficial spreading melanoma, C. Lentigo maligna melanoma, D. Acral lentigious melanoma
B: Superficial spreading melanoma
Answer: B: Superficial spreading melanoma 
Explanation: 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