African burkitt’s lymphoma is caused by:
## Core Concept
African Burkitt's lymphoma, also known as endemic Burkitt lymphoma, is a type of non-Hodgkin lymphoma that is highly prevalent in equatorial Africa. This malignancy is closely associated with **Epstein-Barr Virus (EBV)** and is characterized by a rapid growth rate and a tendency to involve the jaw and abdomen.
## Why the Correct Answer is Right
The correct answer, , is right because **Epstein-Barr Virus (EBV)** is strongly linked to the pathogenesis of African Burkitt's lymphoma. EBV is a herpesvirus that infects more than 90% of the global population at some point in their lifetime. In the context of Burkitt's lymphoma, EBV is believed to contribute to oncogenesis through several mechanisms, including the expression of viral genes that promote cell proliferation and inhibit apoptosis. The virus is detected in the tumor cells of nearly all cases of African Burkitt's lymphoma.
## Why Each Wrong Option is Incorrect
- **Option A:** - This option is incorrect because while malaria may contribute to the pathogenesis of Burkitt's lymphoma indirectly by inducing chronic antigenic stimulation, it is not the direct cause of the disease.
- **Option B:** - This option is incorrect because there is no well-established direct link between and Burkitt's lymphoma.
- **Option D:** - This option is incorrect because, although certain genetic alterations, such as the translocation involving the MYC gene, are critical in the pathogenesis of Burkitt's lymphoma, the question specifically asks for the cause, implying an infectious or environmental agent.
## Clinical Pearl / High-Yield Fact
A key clinical pearl is that **Epstein-Barr Virus (EBV) is associated not only with African Burkitt's lymphoma but also with other malignancies**, such as nasopharyngeal carcinoma and Hodgkin lymphoma. Recognizing the role of EBV in these diseases can aid in diagnosis and understanding the pathogenesis.
**Correct Answer: C. Epstein-Barr Virus (EBV).**