Which virus is implicated in Burkits lymphoma?
**Core Concept**
Burkitt's lymphoma is a type of non-Hodgkin's lymphoma characterized by its rapid growth and high cell turnover. The pathogenesis of Burkitt's lymphoma involves genetic translocations leading to the overexpression of the c-Myc oncogene.
**Why the Correct Answer is Right**
The c-Myc oncogene is involved in cell proliferation and differentiation. Genetic translocations involving the c-Myc gene on chromosome 8 and the immunoglobulin heavy chain gene on chromosome 14 or the kappa light chain gene on chromosome 2 lead to its overexpression. This overexpression disrupts normal cell cycle regulation, resulting in uncontrolled cell proliferation and the development of Burkitt's lymphoma.
**Why Each Wrong Option is Incorrect**
* **Option A:** Epstein-Barr virus (EBV) is associated with various types of cancer, including Burkitt's lymphoma, but it is not the primary cause of Burkitt's lymphoma.
* **Option B:** Human T-cell leukemia virus (HTLV-1) is associated with adult T-cell leukemia/lymphoma, not Burkitt's lymphoma.
* **Option C:** Human herpesvirus 8 (HHV-8) is associated with Kaposi's sarcoma and primary effusion lymphoma, not Burkitt's lymphoma.
**Clinical Pearl / High-Yield Fact**
Burkitt's lymphoma is a highly aggressive and rapidly growing tumor, often presenting with a large abdominal mass and systemic symptoms such as fever and weight loss.
**Correct Answer: C. Epstein-Barr virus (EBV) is associated with Burkitt's lymphoma, but the primary cause is the genetic translocation leading to c-Myc overexpression.