What is usually the first sign of lung cancer?

Related questions

1. Can a blood test detect lung cancer?
2. Does atelectasis go away?
3. Does atelectasis go away on its own?
4. How serious is atelectasis?
5. How does atelectasis appear on X ray?
6. Does lung cancer spread quickly?
7. What does lung cancer feel like when it starts?
8. Is atelectasis a sign of lung cancer?
9. Where do you feel lung pain?
10. What do you do for atelectasis?

Tags

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7. #might
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11. #laughing
12. #breathing
13. #notice
14. #effective
15. #cough
16. #cancer
17. #common
18. #symptoms
19. #worse
20. #likely