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Oncology is the study of cancer. An oncologist is a doctor who treats cancer and provides medical care for a person diagnosed with cancer. [↑]

Oncology (wikipedia):

Oncology is a branch of medicine that deals with the prevention, diagnosis, and treatment of cancer. A medical professional who practices oncology is an oncologist.[1] The name’s etymological origin is the Greek word ὄγκος (ónkos), meaning “tumor”, “volume” or “mass” and the word λόγος (logos), meaning “study”.[2]

Cancer survival has improved due to three main components including improved prevention efforts to reduce exposure to risk factors (e.g., tobacco smoking and alcohol consumption),[3] improved screening of several cancers (allowing for earlier diagnosis),[4] and improvements in treatment.[5][6]

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