Anemia is a common symptom in cancer patients, and there are various mechanisms such as bone marrow infiltration, blood loss, hemolysis, renal, hepatic or endocrine disorders or nutritional deficiencies that can produce the anemia. In a considerable number of patients, however, none of these factors is present, and the anemia appears to be exclusively related to the presence of the malignant disease itself. This type of anemia, known as cancer-related anemia (CRA)