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(... KAN-ser)
| Stage I is divided into stages IA and IB. In stage IA, the tumor is in the lung only and is 3 centimeters or smaller. In stage IB, one or more of the following is true: (1) the tumor is larger than 3 centimeters; (2) cancer has spread to the main bronchus of the lung, and is at least 2 centimeters from the carina (where the trachea joins the bronchi); (3) cancer has spread to the innermost layer of the membrane that covers the lungs; and/or (4) the tumor partly blocks the bronchus or bronchioles and part of the lung has collapsed or developed pneumonitis (inflammation of the lung). |
Previous Definitions: | stage I melanoma, stage I Merkel cell carcinoma, stage I multiple myeloma, stage I mycosis fungoides and the Sézary syndrome, stage I nasopharyngeal cancer | Next Definitions: | stage I nonmelanoma skin cancer, stage I oropharyngeal cancer, stage I ovarian epithelial cancer, stage I ovarian germ cell tumor, stage I ovarian low malignant potential tumor |
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