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. The name's etymological origin is the Greek word ὄγκος (ónkos), meaning "tumor", "volume" or "mass" and the word λόγος (logos), meaning "study".
Colon & rectal cancer
Head and neck cancer
Select a type of cancer to learn about treatment, causes and prevention, screening, and the latest research.