Burkitt lymphoma (also called small noncleaved cell lymphoma) is a type of non-Hodgkin lymphoma, a cancer in the lymphatic system. Burkitt lymphoma is the most common type of non-Hodgkin lymphoma in children. It often grows first in the lymph tissue of the head and neck, including the tonsils, or in the abdomen. It grows rapidly, so symptoms often progress very quickly and children can become quite sick within a few days to weeks. Today, more than 90% of children with Burkitt lymphoma are cured of the disease.