A lymphatic cancer that involves not only the lymphatic and the associated reticuloendothelial system, but also other body tissues. This disease, which is most common in Central Africa, is thought to be possibly caused by the Epstein-Barr 
virus. Also called African 
lymphoma, Burkitt's tumor. See also Epstein-Barr 
Virus; 
Lymph; 
Reticuloendothelial Cells.