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Stages of Chronic Myeloproliferative Disorders

    There is no standard staging system for chronic myeloproliferative disorders.

    Staging is the process used to find out how far the cancer has spread. There is no standard staging system for chronic myeloproliferative disorders. Treatment is based on the type of myeloproliferative disorder the patient has. It is important to know the type in order to plan treatment.

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    Introduction

    Many of the medical and scientific terms used in this summary are found in the NCI Dictionary of Genetics Terms. When a linked term is clicked, the definition will appear in a separate window. Creating evidence-based summaries on cancer genetics is challenging because the rapid evolution of new information often results in evidence that is incomplete or of limited quality. In addition, established methods for evaluating the quality of the evidence are available for some, but not all, aspects of...

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    There are three ways that cancer spreads in the body.

    When cancer cells spread outside the blood, a solid tumor may form. This process is called metastasis. The three ways that cancer cells spread in the body are:

    • Through the blood. Cancer cells travel through the blood, invade solid tissues in the body, such as the brain or heart, and form a solid tumor.
    • Through the lymph system. Cancer cells invade the lymph system, travel through the lymph vessels, and form a solid tumor in other parts of the body.
    • Through solid tissue. Cancer cells that have formed a solid tumor spread to tissues in the surrounding area.

    The new (metastatic) tumor is the same type of cancer as the primary cancer. For example, if leukemia cells spread to the brain, the cancer cells in the brain are actually leukemia cells. The disease is metastatic leukemia, not brain cancer.

      WebMD Public Information from the National Cancer Institute

      Last Updated: February 25, 2014
      This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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