NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,209 terms related to cancer and medicine.

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medical oncologist
(MEH-dih-kul on-KAH-loh-jist)
A doctor who has special training in diagnosing and treating cancer in adults using chemotherapy, hormonal therapy, biological therapy, and targeted therapy. A medical oncologist often is the main health care provider for someone who has cancer. A medical oncologist also gives supportive care and may coordinate treatment given by other specialists.