Oncology has various subspecialties. On the basis of the type of treatment provided, it is named as follows:

* Radiation oncology: treatment primarily with radiation, a process called radiotherapy.

* Surgical oncology: surgeons who specialize in tumor removal.

* Medical oncology: treatment primarily with anticancer drugs, a process called chemotherapy.

Gynecologic oncology focuses on cancers of the female reproductive system.

Pediatric oncology relates to treatment of childhood cancers.

In veterinary medicine, veterinary oncology is the subspecialty that deals with cancer diagnosis and treatment in animals.