A health care professional (usually a physician) who is responsible for monitoring an individual's overall health care needs. Typically, a PCP refers the individual to more specialized physicians for specialist care.

The first treatment for a disease or condition. In patients with cancer, primary therapy can be surgery, chemotherapy, radiation therapy, or a combination of these therapies. Also called primary treatment and first-line therapy.

The original tumor.

Progesterone can also be made in the laboratory. It may be used as a type of birth control and to treat menstrual disorders, infertility, symptoms of menopause, and other conditions.

A protein found inside the cells of the female reproductive tissue, some other types of tissue, and some cancer cells. The hormone progesterone will bind to the receptors inside the cells and may cause the cells to grow. Also called PR.

The likely outcome or course of a disease; the chance of recovery or recurrence.

Increase in the size of a tumor or spread of cancer in the body.

The length of time during and after treatment in which a patient is living with a disease that does not get worse. Progression-free survival may be used in a clinical study or trial to help find out how well a new treatment works

Cancer that is growing, spreading, or getting worse.

In medicine, something that prevents or protects.

Surgery to reduce the risk of developing breast cancer by removing one or both breasts before disease develops. Also called preventive mastectomy.

Surgery intended to reduce the risk of ovarian cancer by removing the ovaries before disease develops.

Surgery to remove an organ or gland that shows no signs of cancer, in an attempt to prevent development of cancer of that organ or gland. Prophylactic surgery is sometimes chosen by people who know they are at high risk for developing cancer.

A gland in the male reproductive system. The prostate surrounds the part of the urethra (the tube that empties the bladder) just below the bladder, and produces a fluid that forms part of the semen

Cancer that forms in tissues of the prostate (a gland in the male reproductive system found below the bladder and in front of the rectum). Prostate cancer usually occurs in older men.