This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
Most common type of HPV associated with invasive cervical cancer is? 
Select and explain. 
A. Type 6, B. Type 16, C. Type 31, D. Type 45
B: Type 16
Answer: B: Type 16 
Explanation: Type 16 is the most common form of HPV found in invasive cancer and in CIN 2 and CIN 3; it is found in 47% of women with cancer.Only ceain types of HPV cause high-grade intraepithelial lesions and cancer (HPV-16, -18, -31, -33, -35, -39, -45, -51, -52, -56, -58, -59, -68).Ref: Berek and Novak&;s Gynecology; 15th edition; Chapter 19