Hematologic cancers are a group of malignant cancers which affect the blood. These cancers affect the production and function of the blood cells. Most of these cancers occur in the bone marrow or lymphatic tissues, where blood cells are produced. The stem cells present in the bone marrow is responsible for the development of the red blood cells, white blood cells and platelets. The cancerous blood cells hinder the proper functioning of blood, like fighting off infections and preventing serious bleeding. Leukemia, lymphoma and myeloma are the three major kinds of blood cancer. This book presents the complex subject of hematologic cancers in the most comprehensible and easy to understand language. It provides comprehensive insights into this field. This book on hematologic cancers is a collective contribution of a renowned group of international experts.