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 ónkos, meaning tumour, and the word logos, meaning speech.
The three components which have improved survival in cancer are: Prevention – by reduction of risk factors like tobacco and alcohol consumption, Early diagnosis – screening of common cancers and comprehensive diagnosis and staging, Treatment – multimodality management by discussion in tumour board and treatment in a comprehensive cancer centre.


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