What is the study of tumors called?

The study of tumors is specifically called oncology. Oncology is a branch of medicine that focuses on the diagnosis, treatment, and prevention of cancer, which includes the study of tumors and their biological behavior. This field encompasses research on the causes of cancer, cancer progression, and the development of treatment strategies ranging from surgery and chemotherapy to radiation therapy.

Pathology, while related, is a broader field that involves the study of disease in general, including the examination of tissue samples and the diagnosis of various diseases, not just tumors. Radiology pertains to imaging techniques such as X-rays and MRIs used to visualize structures within the body, including tumors, but it does not focus exclusively on their study. Hematology is the study of blood and blood disorders, which does not directly pertain to tumors or cancers outside of blood-related malignancies such as leukemia. Therefore, oncology is the most accurate answer when referring specifically to the study of tumors.