Medical Definition of Oncology

Oncology: The field of medicine that is devoted to cancer. Clinical oncology consists of three primary disciplines: medical oncology (the treatment of cancer with medicine, including chemotherapy), surgical oncology (the surgical aspects of cancer including biopsy, staging, and surgical resection of tumors), and radiation oncology (the treatment of cancer with therapeutic radiation).

Quick GuideUnderstanding Cancer: Metastasis, Stages of Cancer, and More

Understanding Cancer: Metastasis, Stages of Cancer, and More

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Last Editorial Review: 5/13/2016

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