Hematology is a branch of medicine that deals with the cause, physiology, pathology, etiology, diagnosis, treatment, prognosis and prevention of blood-related diseases. It is committed to treating diseases that affect the production of blood and its components, such as blood cells, hemoglobin, blood proteins, bone marrow, platelets, blood vessels, spleen, and coagulation mechanism. Such diseases can include types of blood cancers such as hemophilia, blood clots, leukemia, multiple myeloma, and lymphoma. Laboratory work that goes into blood work is usually performed by a medical technologist or medical laboratory scientist.
Hematologists interested in this branch of medicine mainly focus on lymphatic organs and bone marrow. They diagnose blood count irregularities or platelet irregularities. Hematologists also treat organs that are fed by blood cells, including lymph nodes, spleen, thymus, and lymphoid tissue.