Menu Close

Glossary

Showing 1091-1100 out of 1202 Terms

We're sorry, it looks like there has been an error. Please try again soon.

  • Swyer syndrome

    (SWY-er SIN-drome)

    A rare genetic condition in which people who have an X chromosome and a Y chromosome (the usual pattern for males) look female. They have normal female reproductive organs, including a uterus, fallopian tubes, and vagina. However, the ovaries do not develop and are replaced by clumps of tissue where they would normally form. Swyer syndrome is usually not diagnosed until puberty, when menstrual periods do not begin as they should. Having Swyer syndrome increases the risk of certain types of germ cell tumors.

  • Sympathetic nervous system

    SIM-puh-THEH-tik NER-vus SIS-tem

    The part of the nervous system that increases heart rate, blood pressure, breathing rate, and pupil size. It also causes blood vessels to narrow and decreases digestive juices.

  • Symptom

    (SIMP-tum)

    A physical or mental problem that a person experiences that may indicate a disease or condition. Symptoms cannot be seen and do not show up on medical tests. Some examples of symptoms are headache, fatigue, nausea, and pain.

  • Syringe

    (suh-RINJ)

    A small hollow tube used for injecting or withdrawing liquids. It may be attached to a needle in order to withdraw fluid from the body or inject drugs into the body.

  • Systemic

    (sis-TEH-mik)

    Systemic chemotherapy — treatment with anticancer drugs that travel through the blood to cells all over the body.

  • T Lymphocytes

    (… LIM-foh-site)

    A type of white blood cell. T lymphocytes are part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer. Also called T cell and thymocyte.

  • T cell

    (... sel)

    A type of white blood cell. T cells are part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer. Also called T lymphocyte and thymocyte.

  • Targeted therapy

    (TAR-geh-ted THAYR-uh-pee)

    A type of treatment that uses drugs or other substances to identify and attack specific types of cancer cells with less harm to normal cells. Some targeted therapies block the action of certain enzymes, proteins, or other molecules involved in the growth and spread of cancer cells. Other types of targeted therapies help the immune system kill cancer cells or deliver toxic substances directly to cancer cells and kill them. Targeted therapy may have fewer side effects than other types of cancer treatment. Most targeted therapies are either small molecule drugs or monoclonal antibodies.

  • Telehealth

    (TEH-leh-helth)

    The delivery of healthcare from a distance using electronic information and technology, such as computers, cameras, videoconferencing, satellites, wireless communications, and the Internet.

  • Telemedicine

    The delivery of healthcare from a distance using electronic information and technology, such as computers, cameras, videoconferencing, satellites, wireless communications, and the Internet.