Lymphoma is called a cancer of the lymphatic system. Inherently lymphoma is a disease of the body's cells, as other types of cancer. In different parts of the body's cells function differently. However, processes such as the restoration and reproduction of the same. Cell division is an orderly process that is completely controlled by the body. But there are times when this process gets out of control, and cell division ceases. Whatever the cause of lymphoma, the result is the same - in the lymph nodes (one or more) tumor begins to develop.