What is oncology? Share with your friends Share 2 Alina answered this it deals with the study of cancers, and taking preventive measures for the same and then it's treatment 1 View Full Answer Dhruv Joshi answered this Oncology is a branch of medicine that deals with the prevention, diagnosis and treatment of cancer. 'oncos' relates to tumours. 1 Sachi answered this The study of cancer for its diagnosis, treatment and prevention is called oncology. 0 Sumit Yadav answered this Oncology is the study of Cancer and tumour s. 0