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A member asked:
How can old tb scars cause lung cancer in non smoker?
A doctor has provided 1 answer
They do not but: Cancer develops when immunity surveillance decreases by age, infections and genetic alterations..... Etiology of lung cancer in non- smokers is unclear but genetic alteration is largely to blame. Air pollution and second- and third- hand smoking could play a part. Tb scar in the lung could be a milieu or area for developing cancer to nest in....But, this is very rare. Thank you.
Answered 8/4/2017
4.6k views
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