What does NX mean in cancer staging?

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Tags

1. #vessels
2. #means
3. #nearby
4. #travel
5. #cells
6. #tumors
7. #cancer
8. #nodes
9. #based
10. #number
11. #scores
12. #region
13. #multiply
14. #invade
15. #assessed
16. #score
17. #lymph
18. #there
19. #whether