Q&A: How many stages of lung cancer are there?

Question by A-dawgg.: How many stages of lung cancer are there?
I just found out my grandpa has stage 3 lung cancer. how many more stages is there?

Best answer:

Answer by A
NSCLC are assigned a stage from I to IV in order of severity:

•In stage I, the cancer is confined to the lung.

•In stages II and III, the cancer is confined to the chest (with larger and more invasive tumors classified as stage III).

•Stage IV cancer has spread from the chest to other parts of the body.
SCLC are staged using a two-tiered system:

•Limited-stage (LS) SCLC refers to cancer that is confined to its area of origin in the chest.

•In extensive-stage (ES) SCLC, the cancer has spread beyond the chest to other parts of the body.

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