This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Elderly man with a long standing mole over the face which is increasing in size and showing irregular borders Diagnosis 
Select and explain. 
A. Lentigo maligna, B. Superficial spreading melanoma, C. Acral melanoma, D. Nodular melanoma
B: Superficial spreading melanoma
Answer: B: Superficial spreading melanoma 
Explanation: superficial spreading melanoma is the most common type of malignant melanoma and it is also the most reommon type which occursin a patient with a pre existing mole. ref : bailey and love 27th ed