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Hematology is the field of medicine involved in the study of the
blood. Blood is composed of particles, proteins, and fluids that are
made in the lymphatic organs and bone marrow. Patients are normally
under a hematologist's care via referral from a primary caregiver or
hospital. A hematologist is called in when symptoms or tests
indicate anemia, blood clotting disease, blood count irregularities,
or platelet irregularities. To diagnose diseases, hematologists
perform intense analysis of the blood, blood cells, and bone marrow
Hematology is often combined with other disciplines to diagnose and
treat diseases where the blood is involved. Hematopathologists are
doctors who specialize in diseases of the blood but also of the
organs and tissues that are fueled by blood cells (lymph nodes,
spleen, thymus, and lymphoid tissue). They are often experts in
diagnostics where multiple symptoms are involved.
Hematology and oncology overlap in cancer treatment.
Hematology-oncology doctors prescribe and perform stem cell
transplants, bone marrow transplants, chemotherapy, and pheresis.
These therapies are used to treat lymphoma, Hodgkin's disease,
non-Hodgkin's lymphoma, multiple myeloma, and immunity diseases.
Hematologists work in laboratories, blood banks, hospitals, cancer
treatment centers, and medical offices.