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Learn facts about blood, including components of blood, functions of blood cells, and common blood tests.

If your doctor thinks you might have chronic lymphocytic leukemia (CLL), you will need certain exams and tests to make sure.

Detailed information on symptoms of chronic myelogenous leukemia.

Immune thrombocytopenic purpura (ITP) is a blood disorder. With this disease, you have a lower amount of platelets than normal in your blood. Read on to learn more.

Avascular necrosis develops when blood supply to a bone is cut off. This causes the bone to die and can cause pain and joint problems.

A typical bone in your body contains three types of tissue: a hard outer tissue, a sponge-like inner tissue, and smooth tissue at the ends.

Detailed information on diagnostic procedures for bone disorders, including bone densitometry, radionuclide bone scan, and biopsy.

An enchondroma is a type of noncancerous bone tumor that begins in cartilage. An enchondroma most often affects the cartilage that lines the inside of the bones. It often affects the tiny long bones of the hands and feet. It may also affect other bones such as the femur (thighbone), humerus (upper arm bone), or tibia (one of the two lower leg bones).

Osteochondroma is an overgrowth of cartilage and bone at the end of the bone near the growth plate. Most often, it affects the long bones in the leg, the pelvis, or the shoulder blade.