Oncology is a branch of medicine dealing with the prevention, diagnosis and treatment of cancer. The oncologist is a medical professional who practices oncology. There are three components which have improved survival in cancer:
1. Prevention - This is by reduction of risk factors like tobacco and alcohol consumption.
3. Treatment - Multimodality management by discussion in tumor board and treatment in a comprehensive cancer center.
2. Early diagnosis - Screening of common cancers and comprehensive diagnosis and staging
Cancers are managed by attending  multi-disciplinary cancer conferences where the surgical oncologist, pathologist, medical oncologist, organ specific oncologists meet to find possible management for individual patient considering the social, emotional, physical, psychological and financial status of patients.