What does "oncology" mean and what specialists treat cancer?

Oncology is the branch of medicine devoted to the study and treatment of cancer, from onco meaning tumor or mass and logy meaning the study of. An oncologist is a physician specializing in cancer care. Medical oncologists treat cancer with systemic therapies including chemotherapy, immunotherapy, targeted therapy, and hormone therapy. Surgical oncologists perform cancer surgeries to remove tumors and surrounding tissue. Radiation oncologists treat cancer with radiation therapy. Hematologist-oncologists specialize in blood cancers like leukemia, lymphoma, and multiple myeloma. ---