Articles

  • Disease

    Acute lymphoblastic leukemia (ALL)

    A small amount of bone marrow is removed during a bone marrow aspiration.  The procedure is uncomfortable, but can be tolerated by both children and adults.  The marrow can be studied to determine the cause of anemia, the presence of leukemia or other malignancy, or the presence of some "storage diseases" in which abnormal metabolic products are stored in certain bone marrow cells.

    Acute lymphoblastic leukemia (ALL) is a fast-growing cancer of a type of white blood cells called lymphoblasts. These cells are usually found in the bone marrow. ALL occurs when the body produces a large number of immature lymphoblasts. The cancer cells grow quickly and replace normal cells in the ...

  • Disease

    Acute myeloid leukemia

    Blood is comprised of red blood cells, platelets, and various white blood cells.

    Acute myeloid leukemia (AML) is cancer that starts inside bone marrow, the soft tissue inside bones that helps form blood cells. The cancer grows from cells that would normally turn into white blood cells. Acute means the disease develops quickly. For information on other types of leukemia, see:

  • Disease

    Adrenocortical carcinoma

    Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).

    Adrenocortical carcinoma is a cancer of the .

  • Disease

    Agranulocytosis

    Blood is comprised of red blood cells, platelets, and various white blood cells.

    Agranulocytosis means a failure of the bone marrow to make enough white blood cells (neutrophils). Bone marrow is the soft tissue inside bones that helps form blood cells.

  • Disease

    Anaplastic thyroid cancer

    This CT scan of the upper chest (thorax) shows a malignant thyroid tumor (cancer). The dark area around the trachea (marked by the white U-shaped tip of the respiratory tube) is an area where normal tissue has been eroded and died (necrosis) as a result of tumor growth.

    Anaplastic thyroid carcinoma is a rare and aggressive form of cancer of the thyroid gland.

  • Disease

    Aplastic anemia

    A small amount of bone marrow is removed during a bone marrow aspiration.  The procedure is uncomfortable, but can be tolerated by both children and adults.  The marrow can be studied to determine the cause of anemia, the presence of leukemia or other malignancy, or the presence of some "storage diseases" in which abnormal metabolic products are stored in certain bone marrow cells.

    Aplastic is a condition in which the bone marrow does not make enough new blood cells. Bone marrow is the soft, fatty tissue in the center of bones.

  • Disease

    Arrhenoblastoma of ovary

    Arrhenoblastoma of the ovary is an that releases the male hormone, , or other hormones. See also: