This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ovarian Tumors and Vulvar cancer, Subject name: Gynaecology & Obstetrics
The most common histological type of vulval cancer is? 
Select and explain. 
A. Columnar cell carcinoma, B. Transitional cell carcinoma, C. Adenocarcinoma, D. Squamous cell carcinoma
D: Squamous cell carcinoma
Answer: D: Squamous cell carcinoma 
Explanation: Squamous cell carcinoma is the most frequent form of cancer of the vulva. Squamous 92 % Melanoma 2-4 % Basal cell 2-3 % Baholin 1%