Most common type of HPV associated with cervical cancer –
**Core Concept**
Human Papillomavirus (HPV) is a sexually transmitted virus that causes cervical cancer, among other cancers and conditions. The virus has over 100 types, with some types being more carcinogenic than others.
**Why the Correct Answer is Right**
HPV types are classified based on their oncogenic potential, with high-risk types being more likely to cause cancer. The most common high-risk HPV type associated with cervical cancer is HPV-16, which accounts for approximately 50-60% of all cervical cancer cases. This is due to the ability of HPV-16 to integrate into the host genome and disrupt normal cell cycle regulation, leading to uncontrolled cell growth and tumorigenesis.
**Why Each Wrong Option is Incorrect**
* **Option A:** While HPV-18 is also a high-risk type, it is less common than HPV-16 and accounts for around 10-15% of cervical cancer cases.
* **Option B:** HPV-6 and HPV-11 are low-risk types that are primarily associated with genital warts, not cervical cancer.
* **Option C:** HPV types 31, 33, and 45 are also high-risk, but less common than HPV-16.
**Clinical Pearl / High-Yield Fact**
It's essential to note that HPV vaccination can prevent the majority of cervical cancer cases caused by HPV-16 and HPV-18, highlighting the importance of vaccination in cancer prevention.
**Correct Answer:** A. HPV-16.