Leukemia (Blood Cancer) can be either acute or chronic. In acute leukemia, the cancer spreads rapidly. Chronic leukemia grows slower at the beginning stages. There are various types of leukemia, each classified by the growth rate and origins of the cancer cells.
Lymphoma specifically affects the lymph nodes. The type of lymphoma is based on the origins of the cancer cells. Some cases start in the lymphatic system, while others begin in the white blood cells. These cancers are also called Hodgkin and non-Hodgkin lymphomas. They occur when T- or B-cells within white blood cells become abnormal.