An oncologist is a specialized surgeon who removes cancer. Eradicating cancerous cells from the body via surgery is the primary treatment for breast cancer. A lumpectomy is the removal of the tumor itself along with a minuscule amount of healthy tissue that surrounds the cancerous cells. The majority of the breast remains after the operation is complete, but radiation therapy may be recommended as a follow-up procedure. Nevertheless, a lumpectomy may also be referred to as breast-conserving surgery. In most cases, a smaller tumor means more surgical options.