A 20-year-old female asked:
how can old tb scars cause lung cancer in non smoker?
2 doctor answers
Dr. Edgar Mendizabal answered
54 years experience Internal Medicine
Nobody knows: But it happens.
Answered on Jan 3, 2015
Dr. Helmy Guirgis answered
45 years experience Hematology and Oncology
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 on Aug 4, 2017
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