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glossary

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  • Philadelphia chromosome

    FIH-luh-DEL-fee-uh KROH-muh-some

    An abnormality of chromosome 22 in which part of chromosome 9 is transferred to it. Bone marrow cells that contain the Philadelphia chromosome are often found in chronic myelogenous leukemia and sometimes found in acute lymphocytic leukemia.

  • Phlebitis

    (fleh-BY-tis)

    Inflammation (redness, swelling, pain, and heat) of a vein, usually in the legs. Phlebitis may be caused by infection, injury, or irritation.

  • Photosensitivity

    (FOH-toh-SEN-sih-TIH-vih-tee)

    A condition in which the skin becomes very sensitive to sunlight or other forms of ultraviolet light and may burn easily. Photosensitivity usually causes a rash or sunburn, especially on areas of the skin that are exposed to ultraviolet light. The affected areas may be painful and may itch, blister, or peel. Photosensitivity may be caused by certain medicines, such as antibiotics and anticancer drugs, radiation therapy, exposure to certain chemicals, and some medical conditions, such as lupus and xeroderma pigmentosum.

  • Physical exam

    (FIH-zih-kul eg-ZAM)

    An exam of the body to check for general signs of disease.

  • Physical Therapist

    (FIH-zih-kul THAYR-uh-pist)

    A health professional trained to evaluate and treat people who have conditions or injuries that limit their ability to move and do physical activities. Physical therapists use methods such as exercise, massage, hot packs, ice, and electrical stimulation to help strengthen muscles, relieve pain, and improve movement. They also teach exercises to help prevent injury and loss of motion.

  • Physical therapy

    FIH-zih-kul THAYR-uh-pee

    The use of exercises and physical activities to help condition muscles and restore strength and movement. For example, physical therapy can be used to restore arm and shoulder movement and build back strength after breast cancer surgery.

  • Phytochemicals

    (fai · tuh · keh · muh · kl)

    Organic components of plants, and these components are thought to promote human health.

  • PICC line

    A device used to draw blood and give treatments, including intravenous fluids, drugs, or blood transfusions. A thin, flexible tube is inserted into a vein in the upper arm and guided (threaded) into a large vein above the right side of the heart called the superior vena cava. A needle is inserted into a port outside the body to draw blood or give fluids. A PICC may stay in place for weeks or months and helps avoid the need for repeated needle sticks. Also called peripherally inserted central catheter.

  • Pineal gland

    (PIH-nee-ul ...)

    A tiny organ in the cerebrum that produces melatonin. Also called pineal body and pineal organ.

  • Pituitary

    (pih-TOO-ih-TAYR-ee...)

    A pea-sized organ attached to the part of the brain called the hypothalamus. It lies at the base of the brain above the back of the nose. The hypothalamus sends signals to the pituitary gland, which then makes hormones that control other glands and many of the bodys functions, including growth and fertility.