Not easy: It is difficult to catch it early. Some people might benefit from regular screening. Symptoms are more likely with advanced cases, they include cough, weight loss, shortness of breath, chest pain .... Etc.
Answered 10/24/2017
5.1k views
X-ray: Really look, listen, feel, test. X-ray or ct can be first notice even without symptoms. Proof is biopsy or removal.
Answered 12/10/2013
5.1k views
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