specialize in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. These specialists administer chemotherapy and consult with surgeons and radiotherapists on other treatments for cancer. Oncology is a subspecialty of internal medicine.

A physician trained in diagnosing and treating cancer.

Physicians specially trained to treat cancer patients. They may specialize in various branches of the treatment, e.g., chemotherapy, surgery or radiotherapy.