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T stands for your tumor s size and where it s located in your lungs or body. There is also a simplified staging system called limited and extensive stage for small cell lung cancer. Ajcc Quick References Cancer Stages Cancer Quotes Cancer Prevention It often starts in the bronchi then quickly grows and spreads to other parts of the body including the lymph nodes. Staging lung cancer . Grades of lung cancer. Standard of care lung cancer staging ideally should be performed in a multidisciplinary meeting using the information provided both from ct and fdg pet ct with further inputs from the histopathologic findings pathological staging. Doctors use the tnm system to create a number staging system with stages 1 to 4. And it is sometimes used for small cell lung cancer. N stands for node involvement. I had three spots on my spine rib cage and pelvis. Lung cancer staging often uses the letters t n and m. Cancer is in the lung and lymph nodes in the middle of the chest.