NCI Dictionary of Cancer Terms
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stage IIB non-small cell lung cancer (... sel lung KAN-ser)
Stage II non-small cell lung cancer is divided into stages IIA and IIB. In stage IIB, cancer has spread to nearby lymph nodes on the same side of the chest as the tumor. Also, one or more of the following is true: (1) the tumor is larger than 5 centimeters but not larger than 7 centimeters; (2) cancer has spread to the main bronchus and is at least 2 centimeters below where the trachea joins the bronchus (3) cancer has spread to the innermost layer of the membrane that covers the lung; and/or (4) part of the lung has collapsed or become inflamed. OR in stage IIB, cancer has not spread to lymph nodes and one or more of the following is true: (1) the tumor is larger than 7 centimeters; (2) 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; (3) cancer has spread to the membrane around the heart or lining the chest wall; (4) the whole lung has collapsed or become inflamed; and/or (5) there are one or more separate tumors in the same lobe of the lung.