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Non-Small Cell Lung Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] - Stages of Non-Small Cell Lung Cancer

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Stage II

Stage II is divided into stages IIA and IIB. Stage IIA and IIB are each divided into two sections depending on the size of the tumor, where the tumor is found, and whether there is cancer in the lymph nodes.

  • Stage IIA:
    cdr0000520465.jpg
    Stage IIA non-small cell lung cancer. Cancer has spread to certain lymph nodes on the same side of the chest as the primary tumor; the cancer is (a) 5 cm or smaller, (b) has spread to the main bronchus, and/or (c) has spread to the innermost layer of the lung lining. OR, cancer has not spread to lymph nodes; the cancer is (d) larger than 5 cm but not larger than 7 cm, (e) has spread to the main bronchus, and/or (f) has spread to the innermost layer of the lung lining. Part of the lung may have collapsed or become inflamed (not shown).

    (1) Cancer has spread to lymph nodes on the same side of the chest as the tumor. The lymph nodes with cancer are within the lung or near the bronchus. Also, one or more of the following is true:

    • The tumor is not larger than 5 centimeters.
    • Cancer has spread to the main bronchus and is at least 2 centimeters below where the trachea joins the bronchus.
    • Cancer has spread to the innermost layer of the membrane that covers the lung.
    • Part of the lung has collapsed or developed pneumonitis (inflammation of the lung) in the area where the trachea joins the bronchus.

    or

    (2) Cancer has not spread to lymph nodes and one or more of the following is true:

    • The tumor is larger than 5 centimeters but not larger than 7 centimeters.
    • Cancer has spread to the main bronchus and is at least 2 centimeters below where the trachea joins the bronchus.
    • Cancer has spread to the innermost layer of the membrane that covers the lung.
    • Part of the lung has collapsed or developed pneumonitis (inflammation of the lung) in the area where the trachea joins the bronchus.
  • Stage IIB:
    cdr0000682110.jpg
    Stage IIB non-small cell lung cancer. Cancer has spread to certain lymph nodes on the same side of the chest as the primary tumor; the cancer is (a) larger than 5 cm but not larger than 7 cm, (b) has spread to the main bronchus, and/or (c) has spread to the innermost layer of the lung lining. Part of the lung may have collapsed or become inflamed (not shown). OR, (d) the cancer is larger than 7 cm; (e) has spread to the main bronchus, (f) the diaphragm, (g) the chest wall or the lining of the chest wall; and/or (h) has spread to the membrane around the heart. There may be one or more separate tumors in the same lobe of the lung; cancer may have spread to the nerve that controls the diaphragm; the whole lung may have collapsed or become inflamed (not shown).

    (1) Cancer has spread to nearby lymph nodes on the same side of the chest as the tumor. The lymph nodes with cancer are within the lung or near the bronchus. Also, one or more of the following is true:

    • The tumor is larger than 5 centimeters but not larger than 7 centimeters.
    • Cancer has spread to the main bronchus and is at least 2 centimeters below where the trachea joins the bronchus.
    • Cancer has spread to the innermost layer of the membrane that covers the lung.
    • Part of the lung has collapsed or developed pneumonitis (inflammation of the lung) in the area where the trachea joins the bronchus.

    or

    (2) Cancer has not spread to lymph nodes and one or more of the following is true:

    • The tumor is larger than 7 centimeters.
    • Cancer has spread to the main bronchus (and is less than 2 centimeters below where the trachea joins the bronchus), the chest wall, the diaphragm, or the nerve that controls the diaphragm.
    • Cancer has spread to the membrane around the heart or lining the chest wall.
    • The whole lung has collapsed or developed pneumonitis (inflammation of the lung).
    • There are one or more separate tumors in the same lobe of the lung.
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