What Are Hematology and Oncology?

    Hematology (hee-muh-TOL-uh-jee) is the medical specialty that treats diseases and problems relating to blood, including blood cells and vessels, lymph nodes, and bone marrow.

    Oncology (on-KOL-uh-jee) is the medical specialty that studies and treats cancer.

    Hematology-oncology (often called hem-onc) is the study, diagnosis, treatment, and prevention of blood diseases and cancer.

    What Are Hematologist-Oncologists?

    A hematologist-oncologist is a doctor who specializes in blood diseases, bleeding disorders, and cancers. They’re trained in hematology and oncology.

    Why Would Someone Need One?

    Hematologist-oncologists diagnose and treat many different conditions, including: 

    What Do Hematologist-Oncologists Do?

    They provide treatments such as:

    What Is Their Training?

    Hematologist-oncologists who treat kids and teens have training that typically includes:

    • 4 years of pre-medical education at a college or university
    • 4 years of medical school — a medical degree (MD) or doctor of osteopathic medicine (DO) degree
    • 3 years of training in an internal medicine residency program
    • 3 years of pediatric hematology/oncology training in a fellowship program. A “fellow” is a doctor who had more specialty training after completing medical school and residency training.

    They also might have expertise in a specific blood disorder or type of cancer.

    Good to Know

    Some hematologist-oncologists treat also solid tumors, such as retinoblastoma, melanoma, and Wilms tumor.

Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
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