Cancer types can be grouped into broader categories. The main categories of cancer include: |
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Carcinoma - cancer that begins in the skin or in tissues that line or cover internal organs. |
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Sarcoma - cancer that begins in bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue. |
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Leukemia - cancer that starts in blood-forming tissue such as the bone marrow and causes large numbers of abnormal blood cells to be produced and enter the blood. |
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Lymphoma and myeloma - cancers that begin in the cells of the immune system. |
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Central nervous system cancers - cancers that begin in the tissues of the brain and spinal cord. |