Articles

  • Disease

    Cavernous sinus thrombosis

    The sinuses are hollow cavities within the facial bones.  Sinuses are not fully developed until after age twelve.  When people speak of sinus infections, they are most frequently referring to the maxillary and frontal sinuses.

    Cavernous sinus thrombosis is a in an area at the base of the brain that contains a vein, which carries blood from the brain to the heart. This area is called the cavernous sinus.

  • Test

    CBC

    Sickle cell anemia is an inherited blood disease in which the red blood cells produce abnormal pigment (hemoglobin). The abnormal hemoglobin causes deformity of the red blood cells into crescent or sickle-shapes, as seen in this photomicrograph.

    A complete blood count (CBC) test measures the following: The number of red blood cells () The number of white blood cells () The total amount of in the blood The fraction of the blood composed of red blood cells () The CBC test also provides information about the following measurements: Average ...

  • Disease

    Chronic lymphocytic leukemia (CLL)

    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.

    Chronic lymphocytic leukemia (CLL) is cancer of a type of white blood cells called lymphocytes. These cells are found in the bone marrow and other parts of the body. Bone marrow is the soft tissue in the center of bones that helps form all blood cells. CLL causes a slow increase in a certain type of ...

  • Disease

    Chronic myelogenous leukemia (CML)

    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.

    Chronic myelogenous leukemia (CML) is that starts inside bone marrow. This is the soft tissue in the center of bones that helps form all blood cells. CML causes an uncontrolled growth of immature cells that make a certain type of white blood cell called myeloid cells. The diseased cells build up in ...

  • Disease

    Congenital afibrinogenemia

    Congenital afibrinogenemia is a rare, inherited blood disorder in which the blood does not clot normally. It occurs when there is a protein called fibrinogen is totally lacking. This protein is needed for the blood to clot.

  • Disease

    Congenital antithrombin III deficiency

    Deep venous thrombosis (DVT) affects mainly the veins in the lower leg and the thigh. It involves the formation of a clot (thrombus) in the larger veins of the area.

    Congenital antithrombin III deficiency is a disorder that causes the blood to clot more than normal.

  • Disease

    Congenital platelet function defects

    Blood clots (fibrin clots) are the clumps that result when blood coagulates.

    Congenital platelet function defects are problems with one of the blood elements needed for normal clots to form. These cells are called platelets. Congenital means present from birth.

  • Disease

    Congenital protein C or S deficiency

    Blood clots (fibrin clots) are the clumps that result when blood coagulates.

    Congenital protein C or S deficiency is a lack of proteins C or S in the fluid part of the blood. The proteins are natural substances that help prevent blood clots.

  • Disease

    Congenital spherocytic anemia

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

    Congenital spherocytic anemia is a disorder of the surface layer (membrane) of red blood cells. It leads to red blood cells that are shaped like spheres, and premature breakdown of red blood cells ().

  • Test

    Coombs test

    The Coombs test looks for that may stick to your red blood cells and cause red blood cells to die too early.

  • Special Topic

    Cytochrome b5 reductase

    Cytochrome b5 reductase is a blood enzyme that serves to maintain adequate iron levels in the red blood cells to maximize their oxygen-carrying capacity.

    Cytochrome b5 reductase is an in the blood. It controls the amount of iron in your red blood cells, and helps the cells carry the normal amount of oxygen. Persons who do not have enough of this enzyme may develop a condition called .