BLOOD CANCERS Blood cancers, or hematologic cancers, affect the production and function of blood cells. Most of these cancers start in the bone marrow where blood is produced. Types of Blood Cancers Common types of blood cancer include: Leukemia: Cancer that originates in blood-forming tissue. Non-Hodgkin lymphoma: Cancer that develops in the lymphatic system from cells called lymphocytes, a type of white blood cell that helps the body fight infections. Hodgkin lymphoma: Cancer that develops in the lymphatic system from cells called lymphocytes. Hodgkin lymphoma is marked by the presence of an abnormal lymphocyte called the Reed-Sternberg cell (or B lymphocyte). Multiple myeloma: Cancer that begins in the blood's plasma cells, a type of white blood cell that is made in the bone marrow. Blood Cancer Symptoms : Some common blood cancer symptoms include: Fever, chills Persistent fatigue, weakness Loss of appetite, nausea Unexplained weight loss Night swea