Words to Know

locally recurrent cancer

Cancer that has recurred (come back) at or near the same place as the original (primary) tumor, usually after a period of time during which the cancer could not be detected.

lomustine

An anticancer medicine that belongs to the family of medicine called alkylating agents. It is used to treat breast cancer as well as other illnesses.

loop electrosurgical excision procedure

Also called LEEP and loop excision. A technique that uses electric current passed through a thin wire loop to remove abnormal tissue.

loop excision

Also called LEEP and loop electrosurgical excision procedure. A technique that uses electric current passed through a thin wire loop to remove abnormal tissue.

lorazepam

A medicine used to treat anxiety and certain seizure disorders (such as epilepsy), and to prevent nausea and vomiting caused by chemotherapy. It belongs to the families of medicines called antiemetics and benzodiazepines.

low grade

A term used to describe cells that look nearly normal under a microscope. These cells are less likely to grow and spread more quickly than cells in high-grade cancer or in growths that may become cancer.

lubricant

An oily or slippery substance.

lumbar puncture

Also called spinal tap. A procedure in which a thin needle called a spinal needle is put into the lower part of the spinal column to collect cerebrospinal fluid or to give medicines.

lumpectomy

Surgery to remove abnormal tissue or cancer from the breast and a small amount of normal tissue around it. It is a type of breast-sparing surgery.

lung metastasis

Cancer that has spread from the original (primary) tumor to the lung.

luteinizing hormone-releasing hormone agonist

Also called LH-RH agonist. A medicine that inhibits the secretion of sex hormones. In men, luteinizing hormone-releasing hormone agonist causes testosterone levels to fall. In women, luteinizing hormone-releasing hormone agonist causes the levels of estrogen and other sex hormones to fall.

lymph gland

Also called lymph node. A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph glands filter lymph (lymphatic fluid), and they store lymphocytes (white blood cells). They are located along lymphatic vessels.

lymph node dissection

Also called lymphadenectomy. A surgical procedure in which the lymph nodes are removed and a sample of tissue is checked under a microscope for signs of breast cancer. For a regional lymph node dissection, some of the lymph nodes in the tumor area are removed; for a radical lymph node dissection, most or all of the lymph nodes in the tumor area are removed.

lymph node drainage

The flow of lymph from an area of tissue into a particular lymph node.

lymph node mapping

The use of dyes and radioactive substances to identify lymph nodes that may contain tumor cells. Also called lymphatic mapping.

lymph node

Also called lymph gland. A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph nodes filter lymph (lymphatic fluid), and they store lymphocytes (white blood cells). They are located along lymphatic vessels.

lymph vessel

A thin tube that carries lymph (lymphatic fluid) and white blood cells through the lymphatic system. Also called lymphatic vessel.

lymphadenectomy

Also called lymph node dissection. A surgical procedure in which the lymph nodes are removed and a sample of tissue is checked under a microscope for signs of breast cancer. For a regional lymphadenectomy, some of the lymph nodes in the tumor area are removed; for a radical lymphadenectomy, most or all of the lymph nodes in the tumor area are removed.

lymphadenopathy

Disease or swelling of the lymph nodes.

lymphangiogram

An X-ray of the lymphatic system. A dye is injected into a lymphatic vessel and travels throughout the lymphatic system. The dye outlines the lymphatic vessels and organs on the X-ray.