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    Breast Cancer Glossary

    [Index][0-9][A][B][C][D][E][F][G][H][I][K][L][M][N][O][P][R][S][T][U][V][W][X][Z]

     

    O

    Ommaya reservoir
    A device implanted under the scalp and used to deliver anticancer drugs to the fluid surrounding the brain and spinal cord.

    Oncogene
    Any gene believed to be responsible for the uncontrolled cell growth of cancers.

    Oncologist
    A doctor who studies the physical, chemical, and biological properties of tumors, and researches their development, diagnosis, treatment, and prevention. A doctor who specializes in treating cancer.
    Also see in Resources -> Find a Doctor.

    Oopherectomy
    This procedure, which involved surgical removal of the ovaries, used to be a common treatment for metastatic breast cancer prior to the newer estrogen and progesterone antagonists.

    Orchiectomy
    Surgical removal of the testicles in male breast cancer patients. This procedure is not as prevalent since the discovery of the newer, hormonal drugs.

    Organisms
    Plants, animals, and other forms of life that are made up of complex and interconnected systems of cells and tissue.

    Osteoblastic
    A type of bone metastasis in which there is abnormal bone growth. Both osteolytic and osteoblastic lesions can occur in the same person.

    Osteolytic
    A type of bone metastasis in which the bone is eaten away, producing a characteristic "moth-eaten" appearance. If left untreated, there is a high chance of fractures. See osteoblastic.

    Ovarian Ablation
    Surgery, radiation or drug treatment to stop ovarian egg and hormone production as a treatment for breast cancer.

    Ovaries
    The pair of female reproductive glands in which the ova, or eggs, are formed. The ovaries are located in the pelvis, one on each side of the uterus. The ovaries also produce hormones.

    Overexpression
    The excess production of growth factor receptors (cell-surface receptors) that results from alteration of a gene in cancerous cells.

     

     

     

     

     

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