A newly discovered 'cancer' clue proves that ….

Associating the cancerous organ with the cause of the cancer is a wrong assumption.

While no one can say that Dr. Wartman is cured (of adult acute lymphoblastic leukemia), after facing certain death last fall, he is alive and doing well. Dr. Wartman is a pioneer in a new approach to stopping cancer. What is important, medical researchers say, is the genes that drive a cancer, not the tissue or organ — liver or brain, bone marrow, blood or colon — where the cancer originates.

“Until you know what is driving a patient’s cancer, you really don’t have any chance of getting it right,” Dr. Ley said.

Read more @ http://www.msnbc.msn.com/id/48113068/ns/health-cancer/

Which begs the question of: Is there really any truth in the claims that cigarette smoke is the "driving force" that causes the lungs (respiratory organs) to become cancerous?"

You will have to decide for yourself because there is disagreement between the "experts".