Cell lung cancer stage III non-small. Definition

Medical Definition: Cell lung cancer stage III non-small

Stage III is divided into stages IIIA and IIIB. In stage IIIA, cancer has spread to lymph nodes on the same side of the chest as the tumor, the tumor may be any size and cancer may have spread to the main bronchus, the chest wall, diaphragm, pleura around the lungs or the membrane around the heart, but the cancer has not spread to the trachea, and the entire lung or part of it may have collapsed or developed pneumonitis (inflammation of the lung). In stage IIIB, the tumor may be any size and has spread to lymph nodes above the collarbone or the opposite side of the chest as the tumor or to any of the following locations: the heart, major blood vessels leading to the heart or out of it, the chest wall, diaphragm, trachea, esophagus, sternum (chest bone) or backbone, to more than a lobe of the lung or to the liquid pleural cavity surrounding the lungs.

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