Burkitt Lymphoma (BL) is a rare and aggressive form of lymphoma that affects the B-lymphocytes. When a lymphocyte (a type of white blood cell) grows out of control, lymphomas can develop. Lymphomas are categorized in two main groups: Hodgkin lymphomas and non-Hodgkin lymphomas (NHL). Burkitt lymphoma can be defined as a very fast-growing type of highgrade NHL. It develops from abnormal B lymphocytes (B cells).